If humans originated in Africa, how can we have anything other than 100% African DNA?

Question

is there some sort of cutoff point where scientists decided “everyone in Ireland 100,000 years ago will be considered 100% Irish”?

In: 12

Answer 1

Not 100% of humanity’s DNA was created in Africa 100,000 years ago. Humans, like any other living creatures, are constantly evolving. That is why chinese people don’t look the same as indian people, who don’t look the same as arab people, who don’t look the same as east african people, who don’t look the same as west african people, and so on.