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    Y chromosome is evolving faster than the X, primate study reveals

    The male Y chromosome in humans is evolving faster than the X. Scientists have now discovered the same trend in six species of primate.

    The Y chromosome in chimpanzees is evolving faster than the X chromosome. (Image credit: Andyworks/Getty Images)

    The Y chromosome in primates — including humans — is evolving much more rapidly than the X chromosome, new research on six primate species suggests.

    For instance, humans and chimpanzees share upwards of 98% of their DNA across the whole of the genome, but just 14% to 27% of the DNA sequences on the human Y chromosome are shared with our closest living relatives. 

    The finding surprised scientists, given that humans and chimpanzees diverged just 7 million years ago — a blip in evolutionary terms.

    "I expect my genome to be very different to that of bacteria or insects because a lot of time has elapsed, evolutionarily speaking," study co-author Brandon Pickett, a postdoctoral fellow at the National Human Genome Research Institute (NHGRI) at the National Institutes of Health, told Live Science. "But from other primates, I expect it to be pretty similar."

    Source: https://www.livescience.com/planet-earth/evolution/y-chromosome-is-evolving-faster-than-the-x-primate-study-reveals

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