Mikko TuomiAlthough a low level of #Neanderthal ancestry is present in most #humans, the Neanderthal genes are not uniformly distributed.
A handful of regions in the #autosome are entirely devoid of such ancestry in essentially all living humans, and the X #chromosome is strongly depleted across its sequence.
These patterns are most consistent with Neanderthal contributions to human populations being heavily male biased.
The interbreeding between the two groups was predominantly that of male Neanderthals with females of the anatomically modern human population.
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