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The Horizontal Transfer of Genes in Humanity
Humans have certainly something like 2% of their genes comes from Neanderthals, at least if we're of European or Asian origin. We've known this since about 2010 when Santa Parbo who won the Nobel Prize for medicine last year managed to basically kind of work out the genome of Neanderthals. They're ones that provided distant ancestors with a survival advantage as we were pushing out of Africa between 150,000 and 50,000 years ago. The nan stars give us the poison in the sense that they have these infectious diseases that are making us really ill, but they also provide us with the antidotes in the sense of the genes that they've evolved over hundreds of thousands of years