Genetics: Neanderthal male sex chromosomes were gradually replaced by superior modern human genes 

Natural selection across the generations following interbreeding would have seen the Neanderthals' original Y chromosomes gradually replaced, German researchers said. https://www.dailymail.co.uk/sciencetech/article-8772359/Genetics-Neanderthal-male-sex-chromosomes-gradually-replaced-superior-modern-human-genes.html?ns_mchannel=rss&ns_campaign=1490&ito=1490