Stories
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Population genetics gives us an indirect measure of ancestral population size — effective population size, Ne. Applying it to ANI and ASI tells us they weren't comparable: one was substantially smaller than the other. That has implications for how we interpret the demographic transformation that followed.
April 26, 2026
Around 2,000 years ago, intergroup mixing in South Asia largely stopped. The genetic signal is sharp. The cause is not. Multiple hypotheses are taken seriously by different researchers, often with implicit disagreement about which lines of evidence carry the most weight.
April 26, 2026
Story 1 used statistics from living people's DNA to date a mixing event. But ancient DNA — directly sampling individuals from before, during, and after the mixing — reveals something the statistical method can only hint at: it wasn't one event. It was many.
April 26, 2026
Story 1 raised a puzzle: South Indians' genetic mixing finished a millennium earlier than North Indians'. The clean answer comes from realizing the 'Ancestral North Indian' component isn't one population — it's itself a mixture of two waves that arrived in South Asia at very different times.
April 26, 2026
Two ancestral populations met somewhere in South Asia. Almost every Indian alive today is descended from both. Genetics can tell us when — but only by reading the patterns of shuffled DNA in living people.
April 26, 2026