DNA shows girl had one Neanderthal, one Denisovan parent

One can be forgiven for thinking that the first modern humans who ventured out of Africa stumbled into a vibrant bar scene. DNA from just a single cave in Siberia revealed that it had been occupied by two archaic human groups that had interbred with the newly arrived modern humans. This included both the Neanderthals, whom we knew about previously, and the Denisovans, who we didn’t even know existed and still know little about other than their DNA sequences. The DNA also revealed that one of the Denisovans had a Neanderthal ancestor a few hundred generations back in his past.