The Origins of Human DNA

Popular explanations of DNA percentages can be very confusing. Biologists say we have 98% the same as chimps, and 50% the same as each of your parents. And 50% with bananas, and 2% with Neanderthals. It is all nonsense.

From a New Scientist video:

Homo sapiens aren’t as unique as we once thought. In fact, only about 1.5 to 7 per cent of our DNA originated in our species alone. Everything else we share with our ancestors and those human species we once coexisted with, including Neanderthals, Denisovans and even some yet-to-be-identified "ghost populations". This rewrites the story we have told ourselves about our species. We just aren’t that unique.

When our ancestors met these other human species, they didn't just compete with them: they mated with them. And those encounters left a permanent record in our DNA. In other words, those ancient humans we thought had vanished didn't necessarily disappear... Some of them are still here inside you.

No, our ancestors did not mate with other species. Our ancestors were those Neanderthals and other humans.

It does explain at 9:37 that the widely held Out Of Africa theory has been proved wrong.