A large portion of this Neanderthal DNA showed up in a 7,000-year time frame quite a while back, after present-day people emerged from Africa into Europe, and before Neanderthals became terminated around quite a while back. During this time there probably been numerous pairings among Neanderthals and people. To some degree half of the entire Neanderthal genome can be sorted out from sections tracked down in the genomes of various contemporary people. We have our Neanderthal precursors to thank for qualities including red hair, joint pain and protection from certain illnesses. There is one glaring special case. No contemporary people have been found to hold onto any piece of the Neanderthal Y chromosome.