Genetics’ random truths | Gene Expression

Update: Please do not take the labels below (e.g., “Baloch”) as literal ancestral elements. The most informative way to read them is that they indicate populations where this element is common, and, the relationship of proportions can tell us something. The literal proportion does not usually tell us much.

End Update

I was browsing the Harappa results, and two new things jumped out at me. Zack now has enough St. Thomas Christian samples from Kerala that I think we need to accept as the likely model that this community does not derive from the Brahmins of Kerala, as some of them claim. Their genetic profile is rather like many non-Brahmin South Indians, except the Nair, who have a peculiar attested  history with the Brahmins of their region.

But that’s not the really interesting finding. Below is a table I constructed from Zack’s data.

Ethnicity Language S.Indian Baloch Caucasian NE.Euro Karnataka Brahmin Dravidian 47% 38% 4% 6% Karnataka Hebbar Iyengar Brahmin Dravidian 49% 36% 5% 5% Karnataka Iyengar Dravidian 48% 39% 3% 5% Karnataka Iyengar Brahmin Dravidian 48% 37% 3% 7% Karnataka Kannada Brahmin Dravidian 51% 35% 3% 5% Karnataka Konkani Brahmin Dravidian 47% 37% 2% 6% Kerala Brahmin Dravidian 43% 39% 4% 6% Tamil Brahmin Dravidian 46% 40% 3% 6% Tamil Brahmin Dravidian 47% 40% 3% 5% Tamil Brahmin Dravidian 48% 39% 9% 4% Tamil Brahmin Dravidian 47% 38% 6% 4% Tamil Brahmin Dravidian 48% 37% 6% 5% Tamil Brahmin Dravidian 48% 37% 3% 5% Tamil Brahmin Dravidian 48% 35% 5% 6% Tamil Brahmin Iyengar Dravidian 47% 38% 6% 4% Tamil Brahmin Iyengar Dravidian 47% 35% 6% 6% Tamil Brahmin Iyengar Dravidian 50% 35% 2% 8% Tamil Brahmin iyer/iyengar Dravidian 48% 38% 2% 5% Tamil Brahmin iyer/iyengar Dravidian 48% 38% 4% 5% Tamil Brahmin iyer/iyengar Dravidian 47% 37% 2% 5% Tamil Brahmin iyer/iyengar Dravidian 47% 37% 6% 8% Bengali Brahmin IE 43% 35% 4% 10% Bengali Brahmin IE 45% 35% 2% 11% Bengali Brahmin IE 44% 35% 5% 11% Bihari Brahmin IE 39% 38% 5% 11% Maharashtra/Madhya Pradesh Saraswat Brahmin IE 47% 39% 1% 6% Mahrashtrian Desastha Brahmin IE 46% 38% 8% 5% Oriya Brahmin IE 47% 36% 0% 9% Punjabi Brahmin IE 33% 41% 13% 10% Punjabi Brahmin IE 35% 40% 8% 11% Rajasthani Brahmin IE 32% 38% 9% 15% Sindhi Pushtikar/Pushkarna Brahmin IE 31% 36% 12% 10% UP Brahmin IE 37% 38% 2% 14% UP Brahmin IE 41% 37% 7% 11%

I was curious about the distribution of the ...

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