Humans and Neanderthals shared a common ancestor roughly half a million years ago. They then split and evolved in parallel: humans in Africa, and Neanderthals in Europe. When Humans finally ventured to Europe, they had sex with Neanderthals, swapping DNA around. Today, people who aren’t of African descent have DNA linked to their Neanderthal ancestors. Early modern Humans weren’t just having sex with Neanderthals, of course, they were also banging each other more than the Neanderthals providing greater genetic diversity.
Find out more about Neanderthals over at LinkedIn here.