Interbreeding Direction Solves Neanderthal X Chromosome Mystery 조선일보Male Neanderthals and female humans shaped modern DNA through ancient interbreeding, study finds Archaeology News Online MagazineHow ancient attraction shaped the human genome Penn TodayHumans and Neanderthals interbred — but it was mostly male Neanderthals and female humans who coupled up, study finds Live ScienceWhen we interbred with Neanderthals, they were usually the fathers New Scientist