>>18081243
Silly Dasa...
>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

In other words, since the arrival of European Aryans in India, there has been a shift from free intermixing between groups to caste-based endogamy. Ironically, the photo meme is 50% correct in some ways.

The Aryan invaders likely intermingled with the local populations