I was recently reading about how the human species (Homo Sapiens) supposedly originated in Africa around 200,000 years ago. We've since spread out throughout the world, but I found myself wondering just how long it would have taken for a member of this (presumably uniform) species to evolve into one of the modern races (Latino, Nordic, Native American, etc) after moving into its respective area of the world.
I don't mean to sound racist here, but what I mean by "modern races" is that people from different parts of the world have physiological differences that are the result of adaptation to their surroundings (ie: black people have black skin in order to protect them from the UV rays of the harsh African sun). What I want to know is if there is any data about how long it would have taken for these adaptations to take place.
Thanks,
Phineas
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