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Reproductive incompatibility between diverging human lineages grows roughly as the square of their separation time, because it takes pairs of interacting genes.

Drawn from what David Reich said

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What David Reich actually said

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  1. David Reich

    Geneticist at Harvard Medical School

    there's as populations become more apart, there begins to be biological incompatibilities rapidly developing, probably as the square of the distance separation, because you need pairs of interacting genes, and therefore it's the square of the separation.

    Where this was said

    Watch from 1:43:00 plays here

    ↗David Reich – Bronze Age shock, the Neanderthal puzzle, & the sudden spread of farmingyoutube.com

    video · 2h 13m · spoken · machine transcript

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