Where did India’s people come from? Massive genetic study reveals surprises

[Moja]

https://www.science.org/content/article/where-did-india-s-people-come-massive-genetic-study-reveals-surprises

In the largest ever modern whole-genome analysis from South Asia—published as a preprint last month on bioRxiv—researchers reveal new details about the origin of India’s Iranian ancestry and when ancient hunter-gatherers settled the region.
Most Indians are primarily a mixture of three ancestral populations: hunter-gatherers who lived on the land for tens of thousands of years, farmers with Iranian ancestry who arrived sometime between 4700 and 3000 B.C.E., and herders from the central Eurasian steppe region who swept into the region sometime after 3000 B.C.E., perhaps between 1900 and 1500 B.C.E.

 

[Archetype0ne]

Hmm could this be the key to our IE debacle? With which ancestry is the IE wave related? Not sure when the IE tribes made it to India?

If Iran then CHG is key, if steppe then steppe ancestry is the key.

 

[Riverman]

Indoiranian was spread from the steppe, the Iranian farmers from the Indus culture were likely Dravidian speakers which late evaded the Indo-Aryans by moving South.

 

[norbert]

Indoiranian was spread from the steppe, the Iranian farmers from the Indus culture were likely Dravidian speakers which late evaded the Indo-Aryans by moving South.

It is very much doubtful that the "Iranian farmers" from the Indus Valley civilisation spoke Dravidian. I'm not saying that Dravidian was not spoken in the Indus Valley but that the population you mentioned weren't Iranian farmers anymore. The Indus Valley civilisation had an Iranian farmer component, the other being derived from South Asian hunter-gatherers who were indigenous to the Indian peninsula. So the people that came from the Iranian plateau were not speaking Dravidian. There should be a relation with the later Elamites. Aren't they associated with haplogroups like L and R2? What I always find confusing is that some authors talk about Iran_N and CHG as if those were the same populations. Haplogroup J among samples associated with Iran_N must have arrived from the Caucasus.

Iran_N spread in two main directions. As pastoralists, they were expanding both to the west and to the east, thus they make up a significant portion of the Arab genetic make-up and that of modern Indians. The steppe component couldn't have arrived in the same form as it did in Iran, meaning the Indo-Iranians or Indo-Aryans that came to India carried substantial Iranian farmer ancestry themselves. In other words, they brought additional Iranian farmer ancestry together with steppe.

 

[Moja]

Hmm could this be the key to our IE debacle? With which ancestry is the IE wave related? Not sure when the IE tribes made it to India?

If Iran then CHG is key, if steppe then steppe ancestry is the key.

We should wait for the paper of Dr. Niraj Rai, he says in this paper it has been proved that the Steppe ancestry arrived in India after the end of Indo-Aryan/Vedic age (1500-500 BC).

https://www.reddit.com/r/IndianHistory/comments/18xdiwv

 

[Moja]

Indoiranian was spread from the steppe, the Iranian farmers from the Indus culture were likely Dravidian speakers which late evaded the Indo-Aryans by moving South.

According to this study Iranian ancestry came to India from Sarazm in the northwest of Tajikistan, there is absolutely no evidence of Dravidian presence in this region.

 

[Riverman]

According to this study Iranian ancestry came to India from Sarazm in the northwest of Tajikistan, there is absolutely no evidence of Dravidian presence in this region.

Modern Dravidians have very high levels of the Iranian ancestry and related haplogroups beside Indo-Aryan admixture.

 

[Moja]

Modern Dravidians have very high levels of the Iranian ancestry and related haplogroups beside Indo-Aryan admixture.

What do you mean by "related haplogroups"?

 

[Gao1111]

C1b+K2a are natives

 

[Mmiikkii]

C1b+K2a are natives

Both are Central Asian

H, L, R2 and F are