Weird little speculative fiction piece. From Wikipedia: Although some populations of modern humans share some nuclear DNA with the extinct Neanderthals, the t

Weird little speculative fiction piece. From Wikipedia: Although some populations of modern humans share some nuclear DNA with the extinct Neanderthals, the two species do not share any mitochondrial DNA,[32] which in primates is always maternally transmitted. This observation has prompted the hypothesis that whereas female humans interbreeding with male Neanderthals were able to generate fertile offspring, the progeny of female Neanderthals who mated with male humans were either rare, absent or sterile (in line with Haldane's rule). While interbreeding is viewed as the most parsimonious interpretation of the genetic discoveries, the authors point out they cannot conclusively rule out an alternative scenario, in which the source population of non-African modern humans was already more closely related to Neanderthals than other Africans were, due to ancient genetic divisions within Africa.