But then how would all modern humans be so genetically similar? Isn't it a little unlikely that we all underwent evolution in the exact same way in multiple regions at once?
Well our evolution I would think is basically the same, but our diets, especially if cooked would be very different.
What do you eat? Have you tried raw milk?
It's strange, everyone always says dark skinned people can't drink milk. Most of the people I've met who were born in Africa tell me they drank milk from their own goats (or camels) without incident, or even healed things with milk there. And then there's the Masai. Sorry for babbling, but saying all people this or that, it doesn't work very well for me. I know though that here in the US many ethnic people have too much trouble drinking milk to be worth trying. Asia too, Mongols or some groups used lots of dairy, yet here in US cannot, and are known to be genetically unable to use dairy. Maybe ethnic people fare better with dairy than Caucasian, and there's just too much disinformation?
I know in my own family, aunt from uncle from parent from sibling etc fare differently with different foods. I don't know if that could fit in with modern humans originating from different places, but I could wonder. Maybe each just carries a different part of our past.