There’s a long-running controversy among scientists about whether or not early humans interbred with Neanderthals,and if they didn’t, why not? Now DNA has answered the first question by revealing that modern humans show evidence of Cro-Magnon ancestry, but there’s no evidence we had Neanderthal ancestors.

Neanderthals and our early human ancestors were distinct species, although they lived during the same period, often side by side. If they didn’t interbreed, what stopped them? It could have been that they were too distinctly separate to produce offspring, although this is doubtful.
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A new analysis of DNA evidence offers proof that modern humans interbred with other populations around the world for hundreds of thousands of years rather than replacing them. This means that the genes of people today carry vestiges of the genes of Neanderthals and other extinct branches of the human family.

According to the original Out of Africa theory, the ancestors of today?s human population migrated from Africa 100,000 years ago, and they replaced less modern populations living in Europe and Asia.
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