Though Burmese are a good donor for the Tibeto-Burman in Burmese, it seems pretty clear now that I have Tibetan samples that the Bangladeshi samples are a bit more Tibetan-skewed than these Burmese samples. It may be that the early admixture into Bengal was from a Burmese population that had admixed less with the Austro-Asiatic substrate of Burma.
Note that this confirms the Austro-Asiatic populations have a totally different (more southern) East Asian ancestry source.
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Razib Khan
Razib Khan is a Bangladeshi-American geneticist and writer. He is co-founder of Brown Pundits and runs Unsupervised Learning, a Substack on population genetics, evolution, history, and politics with more than 55,000 subscribers, alongside the accompanying podcast. He has blogged at Gene Expression since the early 2000s.
His writing has appeared in The New York Times, The Guardian, National Review, Slate, India Today, Quillette, and UnHerd. He is Director of Operations at FUTO in Austin, Texas, and co-founder of GenRAIT, a life-sciences platform company. Earlier in his career he developed ancestry algorithms for Gene by Gene, the Genographic Project, and Insitome, and was among the first employees at Embark Veterinary.
Born in Dhaka and raised in upstate New York and eastern Oregon, he holds degrees in biochemistry (2000) and biology (2006) from the University of Oregon, and undertook doctoral work in genomics and genetics at UC Davis. He lives in Austin.
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Nice. I kinda deduced this a while back with my kinda amateur-ish runs on qpAdm but yeah Bangladeshis tend to score significant amounts of UYR/Himalayan/Tibetic type ancestries.
pheno wise there is that deviation too, some look Tibeto-Burmese shifted while others look more Himalayan shifted. I think I’m one of the more Tibetic ones because people suggest that I look Nepali and stuff while one of my bros for instance has a more “balanced” Tibeto-Burman type shift.
but that’s just my anthrotard coming out lol
Do we know when this admixture happened? It could be the original Pyu migration?