> Just because both circumstances can exert selective pressure does not mean they are the same. Selective pressure makes change. Different selective pressure m

> Just because both circumstances can exert selective pressure does not mean they are the same. Selective pressure makes change. Different selective pressure makes difference. Reproductive isolation makes large differences possible. Humans have lived in very different environments and been reproductively isolated. There is no a priori reason to believe human populations are the same on every trait. And they’re not. Similar on most things but not on everything.