Some of the studies that I am refuting in this post are in fact quite old & have been replaced by newer genetic studies. Another point to note is that the studies being responded to are difficult to trace, so there is a possibility of fraudulent studies being spread online. In any case, below are the responses to most of these studies.
"Reconstructing Indian Population History"
- David Reich, Kumarasamy Thangaraj, Nick Patterson, Alkes L. Price & Lalji Singh
2009
The politics of genetic history in India
A reader pointed me to an article, Aryan-Dravidian divide a myth: Study. Some of the authors of the paper I reviewed today (actually, I wrote the post yesterday and put it in schedule) had some interesting things to say:
The great Indian divide along north-south lines now stands blurred. A pathbreaking study by Harvard and indigenous researchers on ancestral Indian populations says there is a genetic relationship between all Indians and more importantly, the hitherto believed ”fact” that Aryans and Dravidians signify the ancestry of north and south Indians might after all, be a myth.
”This paper rewrites history… there is no north-south divide,” Lalji Singh, former director of the Centre for Cellular and Molecular Biology (CCMB) and a co-author of the study, said at a press conference here on Thursday.
Senior CCMB scientist Kumarasamy Thangarajan said there was no truth to the Aryan-Dravidian theory as they came hundreds or thousands of years after the ancestral north and south Indians had settled in India.
The study analysed 500,000 genetic markers across the genomes of 132 individuals from 25 diverse groups from 13 states. All the individuals were from six-language families and traditionally ”upper” and ”lower” castes and tribal groups. ”The genetics proves that castes grew directly out of tribe-like organizations during the formation of the Indian society,” the study said. Thangarajan noted that it was impossible to distinguish between castes and tribes since their genetics proved they were not systematically different.
…
”The initial settlement took place 65,000 years ago in the Andamans and in ancient south India around the same time, which led to population growth in this part,” said Thangarajan. He added, ”At a later stage, 40,000 years ago, the ancient north Indians emerged which in turn led to rise in numbers here. But at some point of time, the ancient north and the ancient south mixed, giving birth to a different set of population. And that is the population which exists now and there is a genetic relationship between the population within India.”
…
The researchers, who are now keen on exploring whether Eurasians descended from ANI, find in their study that ANIs are related to western Eurasians, while the ASIs do not share any similarity with any other population across the world. However, researchers said there was no scientific proof of whether Indians went to Europe first or the other way round.
To understand some of these assertions you have to know that in India there are Creationist-like movements driven by nationalist and Hindu fundamentalist ideologies.
There’s been a lot of debate for decades in India about the Aryan Invasion Theory, which posits that Aryans, generally described as light-skinned northerners, overran the Indus Valley Civilization and subjugated the local peoples. Some Indian groups actually adhered to this, but overall the trend has been sharply against it because white nationalists were big proponents of it, and used it to suggest that the peoples of India are mongrelized degenerates who received the gift of civilization from racially superior Europeans. Today many Indians espouse an Out of India theory. I don’t really agree with either position.
The Out of India theory is almost certainly just plain wrong. The Aryan Invasion Theory is a caricatured fact (in contrast to a stylized fact). But first let me quote something from the paper itself:
Two features of the inferred history are of special interest. First, the ANI and CEU form a clade, and further analysis shows that the Adygei, a Caucasian group, are an outgroup…Many Indian and European groups speak Indo-European languages, whereas the Adygei speak a Northwest Caucasian language. It is tempting to assume that the population ancestral to ANI and CEU spoke ‘Proto-Indo-European’, which has been reconstructed as ancestral to both Sanskrit and European languages, although we cannot be certain without a date for ANI-ASI mixture.
This is from the paper that these authors are listed on, but probably written by David Reich. They seem to be going in opposite directions here. I actually think that this section would best be left to the supplements, and other sections of this paper emphasize the likely complexity of the ANI-ASI mixture process. But in the quotes in the media above the other authors seem to be leading you to totally different conclusions from this, instead of leaning toward ANI being Proto-Indo-European, they deny that it is. Instead of demurring on a specific date, they clearly believe that ANI-ASI admixture predates the arrival of Aryans and Dravidians. The second suggests that the authors don’t believe in Out of India, look again at this passage: “Kumarasamy Thangarajan said there was no truth to the Aryan-Dravidian theory as they came hundreds or thousands of years after the ancestral north and south Indians had settled in India.”
The plausibility that the ancestral ANI-Europeans are native to India seems low to me. Dienekes lays out the reasons:
-Suppose postulated ancient Indian PIE speakers had a similar genetic makeup as modern Indians (i.e., a mix of ANI and ASI). Then, the absence of the ASI component outside South Asia cannot be explained.
-If ancient Indian PIE speakers had a purely ANI makeup, then the absence of the ASI component outside South Asia -as in (1)- can be explained. However, this would entail that sharply differentiated populations (ANI and ASI) co-existed in India without mixing for thousands of years; ANI-like PIEs spread from India with their languages; ANI and ASI admixed afterwards. To say that this scenario is not parsimonious would be charitable.
-The only way in which PIE languages may have originated in India would be if they spread without the spread of people. However, before the advent of writing and modern means of transportation and communication, the only way to spread languages was by migration of people.
The authors are correct that this study does not prove the Aryan Invasion Theory (though frankly I believe the first author goes a bit further than I would be willing to go in that very direction!). One would also be correct to suggest that there are ways to salvage the Out of India Theory for the origin of the Indo-European languages, but as Dienekes notes above,
they are not genetically parsimonious. Possibility does not equal probability. Additionally, the full range of philological and archaeological data simply do not support the Out of India Theory. In my arguments with South Asian proponents of Out of India Theory I get a sense of arguing with Creationists; they are excellent at bringing up ambiguities and problems in the standard model, but they are blithely unconcerned with the total implausibility of the alternative model that they offer. There is zero chance of them being convinced, they simply need “good enough” arguments to keep you unbalanced.
Now, let me state something clearly: on average an individual from an Indo-Aryan or Dravidian speaking group in South Asia is going to be more closely related genetically in terms of total genome content to anyone in the Indian subcontinent from Indo-Aryan or Dravidian speaking groups than they are to some from outside the Indian subcontinent. Punjabis may bridle at being associated with what they perceive as racially inferior Tamils and Bengalis, but the reality is that they’re closer to these groups than they are to Persians or other West Asian groups (though Punjabis are much closer to Persians than Tamils and Bengalis are, and the Iranian speaking groups of Pakistan are a more ambiguous case). That does not negate significant clines, as well as suggestions of exogenous input (the last point is one “Scythian” descended Northwest Indians can take succor from). Mixed-race Brazilians may form a distinct cluster separate from Portuguese, West Africans and Amerindians, but they are clearly a racial compound of these three groups. The analogy with South Asians is problematic insofar as I think that an overly simple model of admixture may mislead us down the line, but it shows that just because South Asians are a coherent genetic cluster does not mean that they are uniform, or that they all exhibit equal relatedness to other groups.
Finally, I took figure 3 from the paper, and recoded the Indo-European and Dravidian clusters so you can see the effect of language & caste.
S. Sharma, argued for an Indian origin of R1a1 lineage among Brahmins, by pointing out the highest incidence of R1a*, ancestral clade to R1a1, among Kashmiri Pandits (Brahmins) and Saharias, an Indian tribe.
- Sharma et al 2009
All this suggests that M17 could have found his way initially from India or Pakistan, through Kashmir, then via Central Asia and Russia, before finally coming into Europe.”
-Stephen Oppenheimer
The origins of R1a are definitely not considered Indian. Apart from the recent genetic evidence against it, there is no evidence of a migration from India towards Europe. Linguistic evidence is absent as well.
I am unable to post the data from these links because the website apparently does not seem to allow copying & pasting text from the main article. If anyone's interested, they may visit the links themselves.
Eupedia - Haplogroup R1a
Eupedia - Haplogroup R1b
Migrations into India “did occur, but rarely from western Eurasian populations.” There are low frequencies of the western Eurasian mtDNA types in both southern and northern India. Thus, the ‘caucasoid’ features of south Asians may best be considered ‘pre-caucasoid’ — that is, part of a diverse north or north-east African gene pool that yielded separate origins for western Eurasian and southern Asian populations over 50,000 years ago.
- U.S. biological anthropologist Todd R. Disotell.
There is a fundamental unity of mtDNA lineages in India, in spite of the extensive cultural and linguistic diversity, pointing to a relatively small founding group of females in India. Most of the mtDNA diversity observed in Indian populations is between individuals within populations; there is no significant structuring of haplotype diversity by socio-religious affiliation, geographical location of habitat or linguistic affiliation.
- Scientists Susanta Roychoudhury and thirteen others studying 644 samples of mtDNA from ten Indian ethnic groups.
“The sharing of some Y-chromosomal haplogroups between Indian and Central Asian populations is most parsimoniously explained by a deep, common ancestry between the two regions, with diffusion of some Indian-specific lineages northward.”
Sanghamitra Sahoo, T. Kivisild and V. K. Kashyap. - 2006.
“Language families present today in India, such as Indo-European, Dravidic and Austro-Asiatic, are all much younger than the majority of indigenous mtDNA lineages found among their present-day speakers at high frequencies.
- Mait Metspalu and fifteen co-authors analyzing 796 Indian and 436 Iranian mtDNAs. 2001.
Genetic Evidence on the Origins of Indian Caste Populations
Previous genetic studies of Indian castes have failed to achieve a consensus on Indian origins and affinities. Various results have supported closer affinity of Indian castes either with Europeans or with Asians, and several factors underlie this inconsistency. First, erratic or limited sampling of populations has limited inferences about the relationships between caste and continental populations (i.e., Africans, Asians, Europeans). These relationships are further confounded by the wide geographic dispersal of caste populations. Genetic affinities among caste populations are, in part, inversely correlated with the geographic distance between them (Malhotra and Vasulu 1993), and it is likely that affinities between caste and continental populations are also geographically dependent (e.g., different between North and South Indian caste populations). Second, it has been suggested that castes of different rank may have originated from or admixed with different continental groups (Majumder and Mukherjee 1993). Third, the size of caste populations varies widely, and the effects of genetic drift on some small, geographically isolated castes may have been substantial. Fourth, most of the polymorphisms assayed over the last 30 years are indirect measurements of genetic variation (e.g., ABO typing), have been sampled from only a few loci, and may not be selectively neutral. Finally, only rarely have systematic comparisons been made with continental populations using a large, uniform set of DNA polymorphisms (Majumder 1999).
To investigate the origin of contemporary castes, we compared the genetic affinities of caste populations of differing rank (i.e., upper, middle, and lower) to worldwide populations. We analyzed mtDNA (hypervariable region 1 [HVR1] sequence and 14 restriction-site polymorphisms [RSPs]), Y-chromosome (5 short-tandem repeats [STRs] and 20 biallelic polymorphisms), and autosomal (1 LINE-1 and 39 Alu inserts) variation in ∼265 males from eight different Telugu-speaking caste populations from the state of Andhra Pradesh in South India (Bamshad et al. 1998). Comparisons were made to ∼400 individuals from tribal and Hindi-speaking caste and populations distributed across the Indian subcontinent (Mountain et al. 1995; Kivisild et al. 1999) and to ∼350 Africans, Asians, and Europeans (Jorde et al. 1995, 2000; Seielstad et al. 1999).
RESULTS
Analysis of mtDNA Suggests a Proto-Asian Origin of Indians
MtDNA HVR1 genetic distances between caste populations and Africans, Asians, and Europeans are significantly different from zero (p < 0.001) and reveal that, regardless of rank, each caste group is most closely related to Asians and is most dissimilar from Africans (Table ​(Table1).1). The genetic distances from major continental populations (e.g., Europeans) differ among the three caste groups, and the comparison reveals an intriguing pattern. As one moves from lower to upper castes, the distance from Asians becomes progressively larger. The distance between Europeans and lower castes is larger than the distance between Europeans and upper castes, but the distance between Europeans and middle castes is smaller than the upper caste-European distance. These trends are the same whether the Kshatriya and Vysya are included in the upper castes, the middle castes, or excluded from the analysis. This may be owing, in part, to the small sample size (n = 10) of each of these castes. Among the upper castes the genetic distance between Brahmins and Europeans (0.10) is smaller than that between either the Kshatriya and Europeans (0.12) or the Vysya and Europeans (0.16). Assuming that contemporary Europeans reflect West Eurasian affinities, these data indicate that the amount of West Eurasian admixture with Indian populations may have been proportionate to caste rank.
*****
Y-Chromosome Variation Confirms Indo-European Admixture
Genetic distances estimated from Y-chromosome STR polymorphisms differ significantly from zero (p < 0.001) and reveal a distinctly different pattern of population relationships (Table ​(Table3).3). In contrast to the mtDNA distances, the Y-chromosome STR data do not demonstrate a closer affinity to Asians for each caste group. Upper castes are more similar to Europeans than to Asians, middle castes are equidistant from the two groups, and lower castes are most similar to Asians. The genetic distance between caste populations and Africans is progressively larger moving from lower to middle to upper caste groups (Table ​(Table3).3).
Genetic distances estimated from Y-chromosome biallelic polymorphisms differ significantly from zero (p < 0.05), and the patterns differ from the mtDNA results even more strikingly than the Y-chromosome STRs. For Y-chromosome biallelic polymorphism data, each caste group is more similar to Europeans (Table ​(Table4),4), and as one moves from lower to middle to higher castes the genetic distance to Europeans diminishes progressively.
This pattern is further accentuated by separating the European population into Northern, Southern, and Eastern Europeans; each caste group is most closely related to Eastern Europeans. Moreover, the genetic distance between upper castes and Eastern Europeans is approximately half the distance between Eastern Europeans and middle or lower castes. These results suggest that Indian Y chromosomes, particularly upper caste Y chromosomes, are more similar to European than to Asian Y chromosomes. This underscores the close affinities between Hindu Indian and Indo-European Y chromosomes based on a previously reported analysis of three Y-chromosome polymorphisms (Quintana-Murci et al. 1999b).
Overall, these results indicate that the affinities of Indians to continental populations varies according to caste rank and depends on whether mtDNA or Y-chromosome data are analyzed. However, conclusions drawn from these data are limited because mtDNA and the Y chromosome is each effectively a single haploid locus and is more sensitive to genetic drift, bottlenecks, and selective sweeps compared to autosomal loci. These limitations of our analysis can be overcome, in part, by analyzing a larger set of independent autosomal loci. Consequently, we assayed 1 LINE-1 and 39 unlinked Alu polymorphisms.
*****
Previous genetic studies have found evidence to support either a European or an Asian origin of Indian caste populations, with occasional indications of admixture with African or proto-Australoid populations (Chen et al. 1995; Mountain et al. 1995; Bamshad et al. 1996, 1997; Majumder et al. 1999; Quintana-Murci et al. 1999a). Our results demonstrate that for biparentally inherited autosomal markers, genetic distances between upper, middle, and lower castes are significantly correlated with rank; upper castes are more similar to Europeans than to Asians; and upper castes are significantly more similar to Europeans than are lower castes. This result appears to be owing to the amalgamation of two different patterns of sex-specific genetic variation.
*****
The most likely explanation for these findings, and the one most consistent with archaeological data, is that contemporary Hindu Indians are of proto-Asian origin with West Eurasian admixture. However, admixture with West Eurasian males was greater than admixture with West Eurasian females, resulting in a higher affinity to European Y chromosomes.
*****
West Eurasian admixture in Indian populations may have been the result of more than one wave of immigration into India. Kivisild et al. (1999) determined the coalescence (∼50,000 years before present) of the Indian-specific subset of the West Eurasian haplotypes (i.e., U2i) and suggested that West Eurasian admixture may have been much older than the purported Dravidian and Indo-European incursions. Our analysis of Indian mtDNA restriction-site haplotypes that do not belong to the U2i subset of West Eurasian haplotypes (i.e., H, I, J, K, T) is consistent with more recent West Eurasian admixture. It is also possible that haplotypes with an older coalescence were introduced by Dravidians, whereas haplotypes with a more recent coalescence belonged to Indo-Europeans. This hypothesis can be tested by a more detailed comparison to West Eurasian mtDNA haplotypes from Iran, Anatolia, and the Caucasus. Alternatively, the coalescence dates of these haplotypes may predate the entry of West Eurasians populations into India. Regardless of their origin, West Eurasian admixture resulted in rank-related differences in the genetic affinities of castes to Europeans and Asians. Furthermore, the frequency of West Eurasian haplotypes in the founding middle and upper castes may be underestimated because of the upward social mobility of women from lower castes (Bamshad et al. 1998). These women were presumably more likely to introduce proto-Asian mtDNA haplotypes into the middle and upper castes.
“indeed, nearly all Europeans — and by extension, many Americans — can trace their ancestors to only four mtDNA lines, which appeared between 10,000 and 50,000 years ago and originated from South Asia.”
-Lluís Quintana-Murci,Vincent Macaulay,Stephen Oppenheimer,Michael Petraglia,and their associates
mtDNA haplogroup “M” common to India (with a frequency of 60%), Central and Eastern Asia (40% on average), and even to American Indians; however, this frequency drops to 0.6% in Europe, which is “inconsistent with the ‘general Caucasoidness’ of Indians.”
- Twenty authors headed by Kivisild - Archaeogenetics of Europe - 2000.
Information about every mtDNA in Europe may be found on
this page of Eupedia.
Haplogroup U (mtDNA) originated around North-East Africa & the Middle East. Haplogroup W is an excellent marker for detecting Indo-European maternal lineage, & it's present in northern Pakistan & even in Ukraine. A point to note is that its highest frequency is in Ukraine. Haplogroup M has a possible origin of either Africa or South Asia, it's present in Gypsies as well.
Geneticist Toomas Kivisild led a study (2003) in which comparisons of the diversity of R1a1 (R-M17) haplogroup in Indian, Pakistani, Iranian, Central Asian, Czech and Estonian populations. The study showed that the diversity of R1a1 in India, Pakistan, and Iran, is higher than in Czechs (40%), and Estonians[12].
- Kivilsid - 2003
To them, the subcontinent’s genetic landscape was formed much earlier than the dates proposed for an Indo-Aryan immigration: “The influence of Central Asia on the pre-existing gene pool was minor. ... There is no evidence whatsoever to conclude that Central Asia has been necessarily the recent donor and not the receptor of the R1a lineages.”
Sanghamitra Sengupta, L. Cavalli-Sforza, Partha P. Majumder, and P. A. Underhill. - 2006.
The Dead Sea & Central Asia is a possible origin for the R1a haplogroup, seeing as even Pakistan is slowly getting ruled out.
Origins of R1a1a in or near Europe (aka. R1a1a out of India theory looks like a dud)
Ten years ago, Passarino et al. released a paper focusing on the origins and spread of R1a1a (back then known as Eu19). They did this by studying the frequency and diversity of the 49a,f/TaqI haplotype 11, which appeared to be linked to R1a1a. The conclusion was that R1a1a most likely originated in present day Ukraine, and expanded from there into Europe and Asia. However, a couple years later, STR diversity became the method of choice for studying Y-DNA haplogroup origins and expansions, and the information provided by 49a,f/TaqI Ht11 was basically ignored.
Despite lots of quirky results since then, like placing the ancestors of some modern populations far in Northern Europe when it was still covered with massive ice sheets (see here), no one in academia attempted to challenge the new methodology until this year (see here). However, in the meantime, it was "discovered" that India harbored the greatest diversity in R1a1a STRs, and was thus hailed as the place of origin of this widespread paternal marker.
It seems we've now come full circle, because latest work on the SNP structure within R1a1a shows that India has very low R1a1a diversity. For instance, all Indians tested to date for newly discovered R1a1a SNPs, mostly as part of various private Y-DNA projects, have come back positive for the Z93 mutation. This marker is not upstream to any European R1a1a subclades. In fact, most Eastern Europeans tested to date have come back ancestral for Z93. This information gels very well with ancient DNA results, which show a movement of light-pigmented European-like groups deep into Asia during the early metal ages from somewhere in West Eurasia (see here).
The news just in, courtesy of the R1a and Subclades Y-DNA Project, is that the Z283 SNP ties together the three major European R1a1a subclades. These are R1a1a1-Z284, largely found in Scandinavia, R1a1a1-M458, characteristic of Western Slavic and Eastern German populations, and R1a1a1-Z280, of Central and Eastern Europe. The primary distribution of Z283 shows an uncanny resemblance to that of the former Corded Ware cultural horizon of Northern Europe. Below is a map of the Corded Ware zone from Haak et al. 2008, which describes the discovery of R1a1a in the ancient remains from a Corded Ware burial in what is now Eastern Germany.
References...
Passarino et al., The 49a,f haplotype 11 is a new marker of the EU19 lineage that traces migrations from northern regions of the black sea, Human Immunology, Volume 62, Issue 11, November 2001, Pages 1313-1314
FTDNA R1a and Subclades Y-DNA Project
Haak et al., Ancient DNA, Strontium isotopes, and osteological analyses shed light on social and kinship organization of the Later Stone Age, PNAS November 25, 2008 vol. 105 no. 47 18226-18231
R1a1a conquers the world…in a few pulses?
What can we say from this? If these results hold what they tell us is that R1a1a is a very lucky haplogroup, and its current range is a function of multiple expansions from a common and diverse R1a1a pool, probably in Central Eurasia. The presence of Z93 in Uzbeks, and Mongols, suggests to me that this variant was and is present in Iranians. Therefore, I don’t think that Z93 is indigenous to South Asia, but is intrusive. I believe it arrived with the “Ancestral North Indians.”
No trace of “demographic disruption” in the North-West of the subcontinent between 4500 and 800 BCE; this negates the possibility of any massive intrusion, by so-called Indo-Aryans or other populations, during that period.
Deep late Pleistocene genetic link between contemporary Europeans and Indians, provided by the mtDNA haplogroup U, which encompasses roughly a fifth of mtDNA lineages of both populations. Our estimate for this split [between Europeans and Indians] is close to the suggested time for the peopling of Asia and the first expansion of anatomically modern humans in Eurasia and likely pre-dates their spread to Europe.”
Haplogroup U, being common to North Indian and “Caucasoid” populations, was found in tribes of eastern India such as the Lodhas and Santals, which would not be the case if it had been introduced through Indo-Aryans. Such is also the case of the haplogroup M, another marker frequently mentioned in the early literature as evidence of an invasion: in reality, haplogroup M occurs with a high frequency, averaging about 60%, across most Indian population groups, irrespective of geographical location of habitat. Tribal populations have higher frequencies of haplogroup M than caste populations.”
- U.S. anthropologists Kenneth Kennedy, John Lukacs and Brian Hemphill.
Eupedia's link of haplogroup U (mtDNA) is over
here. This haplogroup has many different subclades, the primary European subclades U3, U4, U5, & U8. The subclade U2 is generally found in South Asia, but is considered to be of Indo-European origins. Another point to note is that haplogroup U's subclade U2 has been discovered in a 30,000 years old Cro-Magnon found in Russia.
Eupedia has also provided a link to a forum post in their forum over
here explaining the implication of the Cro-Magnon's discovery.
I have provided some of the text from that link below.
The so-called Markina Gora skeleton from Kostenki in Russia (near the Don River) was tested for mtDNA and determined to belong to haplogroup U2. This haplogroup is found at very low frequencies in southern Russia nowadays (actually its subclade U2e), but is otherwise primarily found in and around India, Pakistan, Tajikistan and Kyrgyzstan, and to a lower extent Iran and Xinjiang.
If people carrying hg U2 lived in Russia 30,000 years ago, it is doubtful that they already lived all over South Asia. The possibility of a South Asian hunter-gatherer travelling on foot all the way to European Russia is far-fetched. U2 is more probably a Paleolithic European subclade, like U4 and U5. Its widespread presence in the Indian subcontinent today can be explained in the same way that Y-haplogroup R1a is likewise widespread there : the Indo-European migrations.
DNA analysed from early European
The researchers were able to assign the Kostenki individual to haplogroup "U2", which is relatively uncommon among modern populations.
U2 appears to be scattered at low frequencies in populations from South and Western Asia, Europe and North Africa.
Despite its rarity, the very presence of this haplogroup in today's Europeans suggests some continuity between Palaeolithic hunters and the continent's present-day inhabitants, argue the authors of the latest study.
Scientists Collide with Linguists to Assert Indigenous origin of Indian Civilization
Comprehensive population genetics data along with archeological and astronomical evidence presented at June 23-25, 2006 conference in Dartmouth, MA, overwhelmingly concluded that Indian civilization and its human population is indigenous.
In fact, the original people and culture within the Indian Subcontinent may even be a likely pool for the genetic, linguistic, and cultural origin of the most rest of the world, particularly Europe and Asia.
A lot of evidence exists for the Indo-Iranian migrations, including the archaeological, historical, & genetic evidence that was provided earlier. The other genetic studies in this post should also aid in answering a few questions, but I will post some of the recent studies again.
Eupedia - Haplogroup L
L is found mostly in the Indian subcontinent, but also at lower frequencies in Central Asia, Southwest Asia, and Southern Europe along the coast of the Mediterranean Sea (notably in Italy). L1 is typical of the Dravidian people of South India. Various subclades are found in Europe (L1, L2, L3) with any real geographic pattern. Europeans belonging to haplogroup L are likely to be descended from Indian (L1, L3) or Persian (L2, L3) merchants in ancient times, maybe at the time of the Roman Empire.
The study below is quite recent. I advise everyone to read it thoroughly, it answers many questions & is extremely informative.
Genetic Evidence for Recent Population Mixture in India
Most Indian groups descend from a mixture of two genetically divergent populations: Ancestral North Indians (ANI) related to Central Asians, Middle Easterners, Caucasians, and Europeans; and Ancestral South Indians (ASI) not closely related to groups outside the subcontinent. The date of mixture is unknown but has implications for understanding Indian history. We report genome-wide data from 73 groups from the Indian subcontinent and analyze linkage disequilibrium to estimate ANI-ASI mixture dates ranging from about 1,900 to 4,200 years ago. In a subset of groups, 100% of the mixture is consistent with having occurred during this period. These results show that India experienced a demographic transformation several thousand years ago, from a region in which major population mixture was common to one in which mixture even between closely related groups became rare because of a shift to endogamy.
Major admixture in India took place ~4.2-1.9 thousand years ago (Moorjani et al. 2013)
A new paper on the topic of Indian population history has just appeared in the American Journal of Human Genetics. In previous work it was determined that Indians trace their ancestry to two major groups, Ancestral North Indians (ANI) (= West Eurasians of some kind), and Ancestral South Indians (ASI) (= distant relatives of Andaman Islanders, existing today only in admixed form). The new paper demonstrates that admixture between these two groups took place ~4.2-1.9 thousand years ago.
The authors caution about this evidence of admixture:
It is also important to emphasize what our study has not shown. Although we have documented evidence for mixture in India between about 1,900 and 4,200 years BP, this does not imply migration from West Eurasia into India during this time. On the contrary, a recent study that searched for West Eurasian groups most closely related to the ANI ancestors of Indians failed to find any evidence for shared ancestry between the ANI and groups in West Eurasia within the past 12,500 years3 (although it is possible that with further sampling and new methods such relatedness might be detected). An alternative possibility that is also consistent with our data is that the ANI and ASI were both living in or near South Asia for a substantial period prior to their mixture. Such a pattern has been documented elsewhere; for example, ancient DNA studies of northern Europeans have shown that Neolithic farmers originating in Western Asia migrated to Europe about 7,500 years BP but did not mix with local hunter gatherers until thousands of years later to form the present-day populations of northern Europe.15, 16, 44 and 45
This is of course true, because admixture postdates migration and it is conceivable that the West Eurasian groups might not have admixed with ASI populations immediately after their arrival into South Asia. On the other hand, a long period of co-existence without admixture would be against much of human history (e.g., the reverse movement of the Roma into Europe, who picked up European admixture despite strong social pressure against it by both European and Roma communities, or the absorption of most Native Americans by incoming European, and later African, populations in post-Columbian times). It is difficult to imagine really long reproductive isolation between neighboring peoples.
Such reproductive isolation would require a cultural shift from a long period of endogamy (ANI migration, followed by ANI/ASI co-existence without admixture) to exogamy ~4.2-1.9kya (to explain the thoroughness of blending that left no group untouched), and then back to fairly strict exogamy (within the modern caste system). It might be simpler to postulate only one cultural shift (migration with admixture soon thereafter, with later introduction of endogamy which greatly diminished the admixture.
The authors cite the evidence from neolithic Sweden which does, indeed, suggest that the neolithic farmers this far north were "southern European" genetically and had not (yet) mixed with contemporary hunter-gatherers, as they must have done eventually. But, perhaps farmers and hunters could avoid each other during first contact, when Europe was sparsely populated. It is not clear whether the same could be said for India ~4 thousand years ago with the Indus Valley Civilization providing evidence for a large indigenous population that any intrusive group would have encountered. In any case, the problem of when the West Eurasian element arrived in India will probably be solved by relating it to events elsewhere in Eurasia, and, in particular, to the ultimate source of the "Ancestral North Indians".
It is also possible that some of the ANI-ASI admixture might actually pre-date migration. At present it's anyone's guess where the original limes between the west Eurasian and ASI worlds were. There is some mtDNA haplogroup M in Iran and Central Asia, which is otherwise rare in west Eurasia, so it is not inconceivable that ASI may have once extended outside the Indian subcontinent: the fact that it is concentrated today in southern India (hence its name) may indicate only the area of this element's maximum survival, rather than the extent of its original distribution. In any case, all mixture must have taken place somewhere in the vicinity of India.
A second interesting finding of the paper is that admixture dates in Indo-European groups are later than in Dravidian groups. This is demonstrated quite clearly in the rolloff figure on the left. Moreover, it does not seem that the admixture times for Indo-Europeans coincide with the appearance of the Indo-Aryans, presumably during the 2nd millennium BC: they are much later. I believe that this is fairly convincing evidence that north India has been affected by subsequent population movements from central Asia of "Indo-Scythian"-related populations, for which there is ample historical evidence. So, the difference in dates might be explained by secondary (later) admixture with other West Eurasians after the arrival of Indo-Aryans. Interestingly, the paper does not reject simple ANI-ASI admixture "often from tribal and traditionally lower-caste groups," while finding evidence for multiple layers of ANI ancestry in several other populations.
My own analysis of Dodecad Project South Indian Brahmins arrived at a date of 4.1ky, and of North Indian Brahmins, a date of 2.3ky, which seems to be in good agreement with these results.
The authors also report that "we find that Georgians along with other Caucasus groups are consistent with sharing the most genetic drift with ANI". I had made a post on the differential relationship of ANI to Caucasus populations which seems to agree with this, and, of course, in various ADMIXTURE analyses, the component which I've labeled "West Asian" tends to be the major west Eurasian element in south Asia.
Here are the estimated admixture proportions/times from the paper:
Sadly, the warm and moist climate of India, and the adoption of cremation have probably destroyed any hope of studying much of its recent history with ancient DNA. On the other hand, the caste system has probably "fossilized" old socio-linguistic groups, allowing us to tell much by studying their differences and correlating them with groups outside India.
Indo-Aryans, Dravidians, and waves of admixture (migration?)
The Pith:In India 5,000 years ago there were the hunter-gathers. Then came the Dravidian farmers. Finally came the Indo-Aryan cattle herders.
There is a new paper out of the Reich lab, Genetic Evidence for Recent Population Mixture in India, which follows up on their seminal 2009 work, Reconstructing Indian Population History. I don’t have time right now to do justice to it, but as noted this morning in the press, it is “carefully and cautiously crafted.” Since I am not associated with the study, I do not have to be cautious and careful, so I will be frank in terms of what I think these results imply (note that confidence on many assertions below are modest). Though less crazy in a bald-faced sense than another recent result which came out of the Reich lab, this paper is arguably more explosive because of its historical and social valence in the Indian subcontinent. There has been a trend over the past few years of scholars in the humanities engaging in deconstruction and intellectual archaeology which overturns old historical orthodoxies, understandings, and leaves the historiography of a particular topic of study in a chaotic mess. From where I stand the Reich lab and its confederates are doing the same, but instead of attacking the past with cunning verbal sophistry (I’m looking at you postcolonial“theorists”
, they are taking a sledge-hammer of statistical genetics and ripping apart paradigms woven together by innumerable threads. I am not sure that they even understand the depths of the havoc they’re going to unleash, but all the argumentation in the world will not stand up to science in the end, we know that.
Since the paper is not open access, let me give you the abstract first:
Most Indian groups descend from a mixture of two genetically divergent populations: Ancestral North Indians (ANI) related to Central Asians, Middle Easterners, Caucasians, and Europeans; and Ancestral South Indians (ASI) not closely related to groups outside the subcontinent. The date of mixture is unknown but has implications for understanding Indian history. We report genome-wide data from 73 groups from the Indian subcontinent and analyze linkage disequilibrium to estimate ANI-ASI mixture dates ranging from about 1,900 to 4,200 years ago. In a subset of groups, 100% of the mixture is consistent with having occurred during this period. These results show that India experienced a demographic transformation several thousand years ago, from a region in which major population mixture was common to one in which mixture even between closely related groups became rare because of a shift to endogamy.
I want to highlight one aspect which is not in the abstract: the closest population to the “Ancestral North Indians”, those who contributed the West Eurasian component to modern Indian ancestry, seem to be Georgians and other Caucasians. Since Reconstructing Indian Population History many have suspected this. I want to highlight in particular two genome bloggers, Dienekes and Zack Ajmal, who’ve prefigured that particular result.
But wait, there’s more! The figure which I posted at the top illustrates that it looks like Indo-European speakers were subject to two waves of admixture, while Dravidian speakers were subject to one!
The authors were cautious indeed in not engaging in excessive speculation. The term “Indo-Aryan” only shows up in the notes, not in the body of the main paper. But the historical and philological literature is references:
The dates we report have significant implications for Indian history in the sense that they document a period of demographic and cultural change in which mixture between highly differentiated populations became pervasive before it eventually became uncommon. The period of around 1,900–4,200 years BP was a time of profound change in India, characterized by the deurbanization of the Indus civilization, increasing population density in the central and downstream portions of the Gangetic system, shifts in burial practices, and the likely first appearance of Indo-European languages and Vedic religion in the subcontinent. The shift from widespread mixture to strict endogamy that we document is mirrored in ancient Indian texts. [notes removed -Razib]
How does this “deconstruct” the contemporary scholarship? Here’s an Amazon summary of a book which I read years ago, Castes of Mind: Colonialism and the Making of Modern India:
When thinking of India, it is hard not to think of caste. In academic and common parlance alike, caste has become a central symbol for India, marking it as fundamentally different from other places while expressing its essence. Nicholas Dirks argues that caste is, in fact, neither an unchanged survival of ancient India nor a single system that reflects a core cultural value. Rather than a basic expression of Indian tradition, caste is a modern phenomenon–the product of a concrete historical encounter between India and British colonial rule. Dirks does not contend that caste was invented by the British. But under British domination caste did become a single term capable of naming and above all subsuming India’s diverse forms of social identity and organization.
The argument is not totally fallacious, as some castes are almost certainly recent constructions and interpretations, with fictive origin narratives. But the deep genetic structure of Indian castes, which go back ~4,000 years in some cases, falsifies a strong form of the constructivist narrative. The case of the Vysya is highlighted in the paper as a population with deep origins in Indian history. Interestingly they seem to be a caste which has changed its own status within the hierarchy over the past few hundred years. Where the postcolonial theorists were right is that caste identity as a group in relation to other castes was somewhat flexible (e.g., Jats and Marathas in the past, Nadars today). Where they seem to have been wrong is the implicit idea that many castes were an ad hoc crystallization of individuals only bound together by common interests relatively recently in time, and in reaction to colonial pressures. Rather, it seems that the colonial experience simply rearranged pieces of the puzzle which had deep indigenous roots.
Stepping back in time from the early modern to the ancient, the implications of this research seem straightforward, if explosive. One common theme in contemporary Western treatments of the Vedic period is to interpret narratives of ethnic conflict coded in racialized terms as metaphor. So references to markers of ethnic differences may be tropes in Vedic culture, rather than concrete pointers to ancient socio-political dynamics. The description of the enemies of the Aryans as dark skinned and snub-nosed is not a racial observation in this reading, but analogous to the stylized conflicts between the Norse gods and their less aesthetically pleasing enemies, the Frost Giants. The mien of the Frost Giants was reflective of their symbolic role in the Norse cosmogony.
What these results imply is that there was admixture between very distinct populations in the period between 0 and 2000 B.C. By distinct, I mean to imply that the last common ancestors of the “Ancestral North Indians” and “Ancestral South Indians” probably date to ~50,000 years ago. The population in the Reich data set with the lowest fraction of ANI are the Paniya (~20%). One of those with higher fractions of ANI (70%) are Kashmiri Pandits. It does not take an Orientalist with colonial motives to infer that the ancient Vedic passages which are straightforwardly interpreted in physical anthropological terms may actually refer to ethnic conflicts in concrete terms, and not symbolic ones.
Finally, the authors note that uniparental lineages (mtDNA and Y) seem to imply that the last common ancestors of the ANI with other sampled West Eurasian groups dates to ~10,000 years before the present. This leads them to suggest that the ANI may not have come from afar necessarily. That is, the “Georgian” element is a signal of a population which perhaps diverged ~10,000 years ago, during the early period of agriculture in West Asia, and occupied the marginal fringes of South Asia, as in sites such as Mehrgarh in Balochistan. A plausible framework then is that expansion of institutional complexity resulted in an expansion of the agriculture complex ~3,000 B.C., and subsequent admixture with the indigenous hunter-gatherer substrate to the east and south during this period. One of the components that Zack Ajmal finds through ADMIXTURE analysis in South Asia, with higher fractions in higher castes even in non-Brahmins in South India, he terms “Baloch,” because it is modal in that population. This fraction is also high in the Dravidian speaking Brahui people, who coexist with the Baloch. It seems plausible to me that this widespread Baloch fraction is reflective of the initial ANI-ASI admixture event. In contrast, the Baloch and Brahui have very little of the “NE Euro” fraction, which is found at low frequencies in Indo-European speakers, and especially higher castes east and south of Punjab, as well as South Indian Brahmins. I believe that this component is correlated with the second, smaller wave of admixture, which brought the Indo-European speaking Indo-Aryans to much of the subcontinent.
The Dasas described in the Vedas are not ASI, but hybrid populations. The collapse of the Indus Valley civilization was an explosive event for the rest of the subcontinent, as Moorjani et al. report that all indigenous Indian populations have ANI-ASI admixture (with the exceptions of Tibeto-Burman groups).
Overall I’d say that the authors of this paper covered their bases. Though I wish them well in avoiding getting caught up in ideologically tinged debates. Their papers routinely result in at least one email to me per week, ranging from confusion to frothing-at-the-mouth.
Europeoid races and types | DODONA: Human Biodiversity Discussion Forum
Bactrian Camels and Bactrian-Dromedary Hybrids
I don't have the time to go through those links, I have wasted enough time as it is replying to some of the posts here in great detail.
In any case, since the title indicates that one of those links is for racial classification, it must be noted that Pakistani ethnic groups like the Balochis, Kashmiris, Punjabis, Pashtuns, et cetera are all Caucasians.
As far as Bactrian Camels are concerned, while I didn't go through that link either, it should be noted that camels were mentioned in the Avesta, which implies ancient Indo-Iranians were aware of them.
Indo-Iranians: new perspectives
There are some strange and quite funny ideas in the 'orthodox' academic theory about Indo-Europeans and Indo-Iranians. One of these is the idea that Indo-Iranians arrived from the steppes with their horses, substituting the local millenarian civilizations in a mysterious way, imposing a new Indo-European pantheon... If we compare the situation of the Hittites in Anatolia, where they are almost absorbed by the local Hattic and Hurrian and Mesopotamian religions, with many gods with non-Indo-European names, we should be amazed by the strength of Indo-Aryan culture in avoiding any contamination with local Dravidian or Munda gods... It is true that Śiva is regarded as a Dravidian god adopted by the Aryans, but then why does he bear a Sanskrit name (and different Sanskrit epithets starting from the Vedas) and not even a trace of a Dravidian one? And where are non-Indo-European deities in the Avesta? Even the demons (the daevas) are Indo-Iranian there... Another strange idea is that Mitanni Aryans had already Vedic deities and were already Indo-Aryans without ever touching India, as if the Indo-Aryan language and the Vedic religion were not something developed in India, but brought ready-made from a totally different environment, and unchanged when transplanted in South Asia.
I had to search for this article online, & was led to an Internet blog. I skimmed through the article over there, & it must be noted that there are many flaws & conjectures in this article. This article is refuted in terms of genetics by many of the sources provided in this post. Similarly, it does not take in to consideration that there are well known & documented records of Indo-European migrations in to the regions of modern day Pakistan & Afghanistan, as in the Scythians. Apart from the existence of the R1a haplogroup, another point that must be stated is that Indo-European languages are only recorded in this region after the arrival of Vedic Sanskrit & Avestan. The naming of mythological figures is irrelevant, & makes absolutely no difference whatsoever. The Romans share Gods & Goddesses with the Greek & have provided them Latin names. Another interesting argument to make is that the Aryan Pantheon is extremely similar in some ways to the Greek Pantheon. If these groups had no similarities or even ancient common ancestry, how do they explain the existence of those similarities? There isn't a host of information available regarding the Mitanni people, & to some extent their ethnicities are kind of unknown. Some sources indicate that they were elites ruling over a foreign people. As far as their languages are concerned, they do not have to be from Saptha Sindhu because their language isn't Sanskrit. They were probably a branch of Indo-Iranians that migrated in other directions. Their local population spoke a Hurrian language, & they could have had close relations with the Kassites. I could refute most of the incorrect points in that article, but typing out extremely lengthy posts is tiring & time consuming.
These days, the most relevant theories concerning the Indo-European people remains the Paleolithic Continuity Theory & a combination of the Kurgan hypothesis which is extremely flexible. The Kurgan hypothesis suggests that proto-Indo-Europeans migrated from a region above Anatolia towards Europe, Central Asia, & eventually our lands. It initially suggested some sorts of invasions as Indo-European horse riders spread their patriarchal & warfare filled culture. While there is genetic & to some extent historic & archaeological evidence for this theory, there is no archaeological evidence of major wars, that suggests what was more likely to have occurred is migration. The Anatolian hypothesis is another one that I have included though it isn't well supported on linguistic grounds. It refers to Indo-Europeans expanding for agricultural reasons, but the theory fails linguistically due to differences in vocabulary between Indo-European languages for agricultural terms.
The Paleolithic Continuity Theory focuses on Europe & determines that 80% of European genetic stock has existed since Paleolithic times. This suggests that there were other Indo-Europeans that lived in Europe before the expansion of other proto-Indo-Europeans from Central Asia & the East. Uralic people & the speakers of Uralic languages are evidence of the fact that Indo-Europeans had been present in Europe since Paleolithic times. The problem with this theory is that there are considerable genetic variations in Europe itself. So as far as Europe is concerned, the population's origins are a mix of Indo-Europeans from Paleolithic times combined with certain migrations from Central Asia in Eastern Europe. The proof of those migrations comes from the genetic study regarding Croatians that I mentioned previously. However, as far as our lands are concerned, the Indo-Iranians arrived in Afghanistan, Iran, & Indus from Central Asia, Southern Russia, or Andronovo as per the evidence gathered so far. Furthermore, the Indo-Aryans considered themselves different from the locals or the Harappan people.
There are more things in prehistory than are dreamt of in our urheimat
A new paper in Science claims to have ascertained the locus of origin of the Indo-Europeans, Mapping the Origins and Expansion of the Indo-European Language Family. These are bold claims, and naturally have triggered a firestorm. No surprise, the same happened with these researchers when they published the result in 2003 that Proto-Indo-European flourished ~9,000 years ago, in alignment with an “Anatolian hypothesis,” as opposed to a “Steppe/Kurgan hypothesis.” The original paper in 2003 utilized phylogenetic methods which are common within biology, and applied them to linguistics. This second paper now incorporates spatial information into their model, to generate an explicit locus of origination, in addition to the dates for the bifurcations of the node.
In relation to results I think that the figure to the left is the most important, because it gives us their inferred dates of separation between various Indo-European language families. Observe that Italic and Celtic did not diverge in prehistory, but in history (i.e., the Sumerians and Egyptians were flourishing at the time). Additionally, the diversification pattern is not a simple “rake,” there is internal structure. They may date the origin of Indo-European languages to the early Holocene, but the diversification seems to have happened in steps and pulses. Though the authors support the Anatolian hypothesis, they also seem quite comfortable acknowledging that the real story is more complex, though you wouldn’t get that from the media.
But speaking of complexity, who really knows what’s going on in this paper? I have a handle on the general framework, but haven’t used all the algorithms. As I indicate below in population genetics a good intuition on the kinks and tendencies of clustering algorithms can be obtained only through usage. And of course few people will read the supplements. For example, in Nick Wades’ piece in The New York Times David Anthony, author of the magisterial The Horse, the Wheel, and Language: How Bronze-Age Riders from the Eurasian Steppes Shaped the Modern World , makes a criticism which is addressed within the paper (in the supplements):
Dr. Anthony, noting that neither he nor Dr. Atkinson is a linguist, said that cognates were only one ingredient for reconstructing language trees, and that grammar and sound changes should also be used. Dr. Atkinson’s reconstruction is “a one-legged stool, so it’s not surprising that the tree it produces contains language groupings that would not survive if you included morphology and sound changes,” Dr. Anthony said.
Dr. Atkinson responded that he did indeed run his computer simulation on a grammar-based tree constructed by Don Ringe, an expert on Indo-European at the University of Pennsylvania, but that the resulting origin was, again, Anatolia, not the Pontic steppe.
There’s an asymmetry here. The historical linguists have compelling and transparent rationales to make for why the Steppe thesis should be preferred over the Anatolian one. Lay persons can make assessments about historical linguistic models which are based on common sense such as words which span all Indo-European languages, and might give clues to the geographical and temporal point of origin. In response, you have Bayesian phylogenetics. At some point in the future I suspect all of this research will make recourse to Bayesian phylogenetics, but at this stage of the game even most people who use Bayestian phylogenetic packages don’t really understand how they work.
I may not grok the methods in detail, but I do appreciate that the authors simulated data to test their methods, and, that their methods worked for cases where we know the answer. For example, the method correctly inferred the geographical origin of the Romance languages, and their time of diversification. But in this situation we know the answer. How about in cases where we don’t?
I noticed this strange plot in the supplements. I’ve highlighted Romani, the language of the Roma. The fact that Romani is an outgroup to Indo-Aryan langauges, illustrates some deep problem with their method. Romani did not start diverging from other Indo-Aryan languages 3-3,500 years ago. It started diverging 1-1,500 years one. We know this because that’s when the Roma start showing up in the Islamic world and parts of southeast Europe. It may be that it just happens to be that the most diverged Indo-Aryan language also happened to be the one which migrated out of India, but I don’t think that’s the case. Rather, the non-Indo-Aryan influences on Romani must be impacting its affinity to other Indo-Aryan languages, even if they are core words.
With that skepticism entered into the record, I can broadly credit the possibility proposed here in the most general sense. We know from genetic clustering algorithms that Indo-European populations within Europe seem enriched for a “West Asian” element vis-a-vis their non-Indo-European neighbors.
I’m talking here mostly about the Basque and Finns, though arguably the Sardinians were Indo-Europeanized only during the Roman era, and they should count as well. But, I’m pretty sure that the Indo-Aryans are the ones who brought the “European” component found in low levels across northwest South Asia to the subcontinent. The Indo-Iranians diverged from the European Indo-Europeans ~4,000 BC, and I’m suspecting this may have happened along the broad trans-Caucasian and Russian fringe. This is where contact was made was Uralic peoples. The authors of the paper themselves point to the viability of the Kurgan hypothesis in this modified form in the text. I don’t see why the archaeologist are all worked though (unlike the historical linguists).
Note how close Greek & Albanian are to Indo-Iranian. In fact they diverged at around the same point in time around 6000 years back. Another point to note is that the Scythians are a group of people that lived all across historical Andronovo or Central Asia.
Scythians
The Scythians first appeared in the historical record in the 8th century BC. Herodotus reported three contradictory versions as to the origins of the Scythians, but placed greatest faith in this version:
There is also another different story, now to be related, in which I am more inclined to put faith than in any other. It is that the wandering Scythians once dwelt in Asia, and there warred with the Massagetae, but with ill success; they therefore quitted their homes, crossed the Araxes, and entered the land of Cimmeria.
SCYTHIAN WARRIORS SHOW GENETIC BLENDING BETWEEN EUROPEANS AND ASIANS
Evidence of the potential genetic blending between Europeans and Asians has been discovered by a team of researchers led by the Universitat Autònoma de Barcelona (UAB) within the remains of Scythian warriors living over 2,000 years ago in the Altai region of Mongolia.
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The results obtained demonstrate that the population from the Iron Age, corresponding to the time when the Scythian culture resided in the Altai Mountains, had a perfect 50/50 mix of European and Asian mitochondrial DNA lineages or sequences, while previous populations showed no signs of this lineage mixture: the DNA analysed in the tombs located in Russia and Kazakhstan belong to European lineages, whereas DNA from the eastern part, in Mongolia, contained Asian lineages
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The results provide exceptionally valuable information about how and when the population diversity found today in Central Asian steppes appeared. They point to the possibility that this occurred in Altai over 2,000 years ago between the local population on both sides of the mountain range, coinciding with the expansion of the Scythian culture, which came from the west”, explains Assumpció Malgosa, professor of Biological Anthropology at UAB and coordinator of the research.
Studies conducted until now on ancient DNA samples from the Altai region already indicated that the Scythians were the first large population to be a mixture between Europeans and Asians. However, the only populations to be studied were those on the western part of the Eurasian steppes, suggesting that this mixture was due to population migrations from Europe to the east.
The current research is the first to offer scientific evidence of this population mixture on the eastern side of the Altai and indicates that the contact between European and Asian lineages occurred before the Iron Age when populations were present on both sides of the mountain. The study suggests that the Asian population adopted the Scythian culture which was technologically and socially more advanced, and this made them improve demographically by favouring their expansion and contact with Europeans.
The idea poses a new hypothesis on the origin of today’s population diversity in Central Asia and allows for a better understanding of the demographic processes which took place.
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Ancient Siberians carrying R1a1 had light eyes - take 2
Hot on the heels of that recent Bouakaze et al. paper on the pigmentation genetics of prehistoric South Siberians, here's another effort based on the same samples and by basically the same team. This paper attempts to further elucidate the origins of these light-pigmented Kurgan nomads, including so called Scytho-Siberians.
Our autosomal, Y-chromosomal and mitochondrial DNA analyses reveal that whereas few specimens seem to be related matrilineally or patrilineally, nearly all subjects belong to haplogroup R1a1-M17 which is thought to mark the eastward migration of the early Indo-Europeans. Our results also confirm that at the Bronze and Iron Ages, south Siberia was a region of overwhelmingly predominant European settlement, suggesting an eastward migration of Kurgan people across the Russo-Kazakh steppe. Finally, our data indicate that at the Bronze and Iron Age timeframe, south Siberians were blue (or green)-eyed, fair-skinned and light-haired people and that they might have played a role in the early development of the Tarim Basin civilization.
Here are the locations of present-day individuals who were found to carry similar Y-chromosome lineages to those of the Kurgan samples. Interestingly, the most strongly represented region is East-Central Europe, which was once the home of the Corded Ware cultural horizon. Please note, three Corded Ware remains from a burial site at Eulau, Eastern Germany, were recently found to belong to R1a, which was most likely R1a1-M17 based on their shared Y-STR haplotype (see here).
Christine Keyser et al., Ancient DNA provides new insights into the history of south Siberian Kurgan people, Human Genetics, Saturday, May 16, 2009, doi: 10.1007/s00439-009-0683-0
Ancient Siberians carrying R1a1 had light eyes
My interpretation of the results here is that these ancient Siberians were largely of East-Central European origin, or from the same source as modern East-Central Europeans. They also most likely spoke Indo-Iranian (ie. Indo-European) languages. After migrating east they obviously came into contact with populations from East Eurasia and mixed with them. So there's nothing really surprising there, because it fits with what we know from archeology, as well as other aDNA studies. For example, a recent analysis of Corded Ware skeletons from Germany also found R1a (likely R1a1), as well as a rare mtDNA lineage present in modern Indo-Iranian Shugnans from Tajikistan.
So it's pretty clear there were Bronze Age expansions deep into Asia from somewhere in the west, probably Europe. They carried with them West Eurasian genes and physical characteristics, and perhaps Indo-European speech. But many of the details are still a mystery.
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Mystery People of the Tarim Basin
The mummies, which display curiously European features such as brown hair and long noses, were buried underneath upside-down boats, while the ancient surface layer was marked not by traditional grave markers, but a collection of large wooden poles driven into the ground. The cultural origins and identity of these people are unknown, but the site possesses many clues which may help archaeologists to answer these questions.
Carbon testing has determined that the 200 or so mummies unearthed at Small River Cemetery No.5 are the most ancient people found in the Tarim Basin to date, the oldest dating back to approximately 3,980 years ago.
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These findings have led researchers to conclude that this group of people must have been the result of European and Siberian intermarriage before they began their eastward migration.
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Below is a map of the Tarim Basin Civilization. Look at the geographical location of the civilization & note how close it is to Kashmir. It's amazing to know that that is what the people that lived in this region looked like just 4000 years ago, this also indicates & gives credence to a migration.
The Taklamakan Mummies(Tocharian mummies)
In the late 1980's, perfectly preserved 3000-year-old mummies began appearing in a remote Taklamakan desert. They had long reddish-blond hair, European features and didn't appear to be the ancestors of modern-day Chinese people. Archaeologists now think they may have been the citizens of an ancient civilization that existed at the crossroads between China and Europe.
Victor Mair, a specialist in the ancient corpses and co-author of “Mummies of the Tarim Basin”, said:"Modern DNA and ancient DNA show that Uighurs, Kazaks, Krygyzs, the peoples of Central Asia are all mixed Caucasian and East Asian. The modern and ancient DNA tell the same story.”
The discoveries in the 1980s of the undisturbed 4,000-year-old ”Beauty of Loulan” and the younger 3,000-year-old body of the ”Charchan Man” are legendary in world archaeological circles for the fine state of their preservation and for the wealth of knowledge they bring to modern research. In the second millennium BC, the oldest mummies, like the Loulan Beauty, were the earliest settlers in the Tarim Basin.
One of the most famous Tocharian mummies found, the so-called "Beauty of Loulan"; and right, her face as reconstructed by an artist.
“Beauty of Loulan” The oldest mummies found in the Tarim Basin come from Loulan located at the east end of the egg shaped Taklamakan Desert. Dressed only in shades of brown, she was alive as early as 2000 B.C. during the era of Abraham and the patriarchs. She died when she was about 40. Next to her head there is a basket which contains grains of wheat.
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The Mystery Behind the 5,000-Year-Old Tarim Mummies
Tocharian Nordic mummy found in 1989: Disfigured female with blonde hair
So what were a group of Indo-Europeans doing so many thousands of miles east of their established territory? From their full beards, deep-set eyes and high noses – as well as associated texts and artefacts found with the mummies – it is thought they were Tocharians, herders who travelled east across the Central Asian steppes and whose language was Indo-European in kind. Some speculate that these Tocharians may have profited from prehistoric trade along a route that would later become the Silk Road.
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Anyway, that's enough evidence for now. I will respond to the remaining posts later when I get the time.