Ancient Man Had Neanderthal Great-Great Grandfather

Analysis of the jawbone of a man who lived about 40,000 years ago reveals the closest direct descendant of a Neanderthal who mated with a modern human.

A modern human who lived in what is now Romania between 37,000 and 42,000 years ago had at least one Neanderthal ancestor as little as four generations back—which is to say, a great-great-grandparent.

Scientists have known for at least half a decade that living humans bear traces of Neanderthal blood—or more specifically, Neanderthal DNA. Just when and where our ancestors bred with their now-extinct cousins, however, has been tricky to pin down until now. A new study published Monday in the journal Nature has the highest percentage of Neanderthal DNA of any modern human ever studied.

“I could hardly believe that we were lucky enough to hit upon an individual like this,” says study co-author Svante Pääbo of

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