Dna mutations dating migrations lesson
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.
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. 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!
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).
One of those with higher fractions of ANI (70%) are Kashmiri Pandits.
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.
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.
Interestingly they seem to be a caste which has changed its own status within the hierarchy over the past few hundred years.