Small Traditional Human Communities Sustain Genomic Diversity over Microgeographic Scales despite Linguistic Isolation.

Abstract excerpt

At least since the Neolithic, humans have largely lived in networks of small, traditional communities. Often socially isolated, these groups evolved distinct languages and cultures over microgeographic scales of just tens of kilometers. Population genetic theory tells us that genetic drift should act quickly in such isolated groups, thus raising the question: do networks of small human communities maintain levels...

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