Human origins: Genome models are converging on a scenario in which two stem lineages separated 1.5 million years ago, and merged together 300,000 years ago.

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https://www.johnhawks.net/p/modern-humans-evolved-from-an-80

“Sub-Saharan African populations have a different historical pattern. None have the pronounced period of high inbreeding around 70,000 to 40,000 years ago that is seen elsewhere in the world”

Lots here