If the Replacement Theory is correct, all living humans have roughly the same genetic baggage, and racial distinctions among them are negligible. But if the Interbreeding Theory is right, there might well be genetic differences between Africans, Europeans and Asians that go back hundreds of thousands of years. This is political dynamite, which could provide material for explosive racial theories.
I don’t understand this argument, since we can study genetics and human biology today. We know the differences between races and ethnicities are superficial at best. There are far more significant differences between us and prehistoric humans than there are between different ethnicities and races in today’s humans.
