> They also never completely vanished; I have a number Neanderthal-specific alleles (more than most), as have pretty much all people of not exclusively subsahar

> They also never completely vanished; I have a number Neanderthal-specific alleles (more than most), as have pretty much all people of not exclusively subsaharan descent, and these alleles seem to have some pretty profound effects, some of them quite negative. Can you elaborate? What kind of effects?