Human-Neanderthal coupling was rare: study

Scientists have shown that modern humans have some traces of genes from Neanderthals, but a study out Monday suggests that any breeding between the two was most likely a rare event. The new computational model, based on DNA samples from modern humans in France and China, shows successful coupling happened at a rate of less than two percent. The research suggests that either inter-species sex was very taboo, or that the hybrid offspring had trouble surviving, according to the findings in the Proceedings of the National Academy of Sciences. Read the rest of this article...