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The caste system transformed Indian genetics – David Reich
3 segments available
Full Episode: https://youtu.be/Uj6skZIxPuI Transcript: https://www.dwarkeshpatel.com/p/david-reich Apple Podcasts: http://apple.co/3RFuS7b/ Spotify: http://spoti.fi/3APeQ3L Me on Twitter: https://twitter.com/dwarkesh_sp If you’re interested in advertising on the podcast: https://www.dwarkeshpatel.com/p/advertise
Segments Timeline
The Genetic Landscape of South Asia
David Reich discusses the unique genetic makeup of South Asians, highlighting the gradient of ancestry between ancestral North Indians and ancestral South Indians. He compares this genetic mixture to that of African-Americans, emphasizing how cultural changes, particularly the caste system, have frozen this genetic diversity over thousands of years.
"How is it possible that for 4000 years the things like caste, things like basic mythology can be preserved with such high fidelity, especially in an era? at least a couple thousand or 2000 years. You ..."
Cultural Changes and Genetic Freezing
Reich explains the historical context of genetic mixing in India, detailing the arrival of three ancestral populations and how the caste system solidified these genetic distinctions. He illustrates how this cultural shift led to a stable genetic gradient, contrasting it with the more homogenized genetic landscape seen in Europe.
"like African-Americans, who are the result of mixture in the last ten or so generations between two, mostly two very different populations mixing in different proportions. but what happened in India i..."
The Patel Exception
In this segment, Reich delves into the unique genetic history of the Patel community, noting how they differ from the general South Asian genetic gradient. He discusses the implications of genomic data from Gujaratis in Houston, Texas, revealing their distinct ancestry and relationships to Central Asia, which sets them apart from other groups.
"and because of the enduring this of the caste system, you actually have a snapshot going back a couple of thousand years and, without this continuing change, and so, so, so it's kind of an amazing sys..."