Neanderthals and humans likely mixed and mingled during a narrow time frame 45,000 years ago, scientists reported Thursday.
Researchers analyzed ancient genes to pinpoint the time period, which is slightly more recent than previous estimates for the mating.
Modern humans emerged in Africa hundreds of thousands of years ago and eventually spread to Europe, Asia and beyond. Somewhere along the way, they met and mated with Neanderthals, leaving a lasting fingerprint on our genetic code.
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