gene club

it is now thought that most non africans have more extinct caveman dna then thought before.the modern human migrated from africa and then interbred with neanderthals and denisovians around 4,000 years ago.a larger trace of  the denisovian gene which gave papuva new guineans better sense of smell ,tibetans adapt to high altitude and neanerthals -tougher skin and help adapt to enviroments.