An unknown ancestor mated with ancient humans. Its DNA is found in living people to this day
Whenever distinct groups of humans and their ancestors overlapped in space and time, interbreeding was just around the corner.
Tag: Denisovans
Modern humans and Denisovans interbred at least twice in history
Our ancestors interbred both with Neanderthals and Denisovans.
Modern humans lost some of their smoke-resistance genes and we don’t know why
So remember, don't smoke kids.