Coloring reflects latitude, with people ligther the farther north. Whiteness is

Coloring reflects latitude, with people ligther the farther north.
Whiteness is a relatively recent adaptation, within the past 20k years.
Europeans and east asians diverged from south eurasians around 40K years ago.
South eurasians diverge from africans sometime before that. I don’t know how early it started, but likely by 60k years ago.
Out of africa repeatedly from 100-60k years ago.
Africa continued divergence from old africans since then.

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