Indus Valley itself was 87 % Iranic by Autosomal DNA. It was Pre Empire age Iranic DNA that went to South Asia from Iranic plateaue. So the valley was a farmers swamp with no martial heritage. They got destroyed by Iranicised IE's (entered from BMAC, Afghanistan, Greater Khorasan), Iranic Sychtians, and later by Irano-Turkic invasions post muslim age.
Autosomal DNA of Indus valley was nothing but up to 87 % Iranian Neolithic farmers. Rest 13 % came from Austrailoid India (AASI) yes but mostly it was just Iranian farmers (Sample:
Shahre Sokhteh) who started the pastoralist civilization in the Indus basin.
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Direct quotations from the high impact published western papers:
https://doi.org/10.1371/journal.pone.0095714
“Indus Valley civilisation (of parts of Bronze Age Northwest India and East Pakistan) and "outliers" from surrounding cultures, conclude that
the IVC-population was a mixture people related to Iranian herders and ASI”
“Distance from the Iran (of Indus valley), suggesting a systematic (but not necessarily uniform) spread at an average speed of about 0.65 km/yr”.
“The only fitting two-way models were mixtures of a group related to herders
from the western Zagros mountains of Iran and also to either Andamanese hunter-gatherers or East Siberian hunter-gatherers (the fact that the latter two populations both fit reflects that they have the same phylogenetic relationship to the non-West Eurasian-related component likely due to shared ancestry deeply in time).
“
50–98% of the IVC-genome came from people related to early Iranian farmers, and from 2–50% of the IVC-genome came from native South Asian hunter-gatherers sharing a common ancestry with the Andamanese”
“Those
Iranian farmers-related people may have arrived in India before the advent of farming in northern India,[44] and mixed with people related to Indian hunter-gatherers c. 5400 to 3700 BCE, before the advent of the mature IVC”
Iran_N content in modern-day Indo-Pak groups could be as high as 50-60%. These groups cluster with each other as well.
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Look at the Dark green part which is Iran_N in modern day Indo-Pak population groups.
Not exactly. There is no "Modern day Iranian".
Iranian Autosomal DNA has not changed much since late Iron Age times. Look at the extreme proximity of "Modern Day Iranians" and "Iron Age Iranians" thats more than 95% genetic continuity. Its same for Turkish, Armenians, Georgians, Iranians.
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And here is the fun part. The same DNA that Iron age Iranians had is what modern day Turkish, Armenians and even Georgians have which tells us that the claims of Altaic warriors roaming around west Asia is linguistic identity mostly, not genetic. Iranians, Turkish, and Armenians are just the same old populations that have somehow sustained their autosomal makeup while Indics on the other hands have kept receiving layer after layer of invaders. Look at the extreme proximity of Iranian and Turkish nations. Mind you Iranian DNA is preserved from Iron age times.
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And btw Arabian J1M267 Haplogroup does not even exist 1% in Iranian or Turkish populations. On the contrary, you will find plenty of R1 Iranic in Arabian peninsula. Which is explained by this map of Persian Empire. The modern day UAE, Peripheral Yemenites, Omanis all have R1 in good amount which landed in Penninsula during Iranic expansion while reverse never happened.
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