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  1. #1
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    Neanderthals were likely firing blanks into human women

    Study of Neanderthal Y chromosome hints at fertility problems



    The first examination of a long-extinct Neanderthal's Y chromosome suggests that fertility problems may have prevented Neanderthal men from successfully mating with modern human females, researchers said.

    The study in the American Journal of Human Genetics is based on a male Neanderthal whose 49,000-year-old remains were found in El Sidron, Spain.

    Until now, researchers have only sequenced the DNA of female Neanderthal fossils, and have found that one to four percent of European and Asian people's DNA can be traced to Neanderthals.

    But researchers at Stanford University found that the Neanderthal's Y chromosome is completely lacking in males today.

    The Y chromosome is one of two human sex chromosomes (X and Y) and is passed on exclusively from father to son.

    The findings suggest that Neanderthal Y chromosomes may never have been passed along when Neanderthals and humans mingled and mated some 50,000 years ago.

    That could be because women may have miscarried male fetuses sired by Neanderthals, or produced very few healthy male babies that could pass on this Y-chromosome lineage.

    Researchers are probing the hypothesis that modern women's immune systems might have attacked male fetuses carrying certain Neanderthal mutations.

    The scientists say they found mutations in certain immune system genes from the El Sidron Neanderthal that have been blamed for transplant rejection when modern males donate organs to women.

    "The functional nature of the mutations we found suggests to us that Neanderthal Y chromosome sequences may have played a role in barriers to gene flow, but we need to do experiments to demonstrate this and are working to plan these now," said senior author Carlos Bustamante, professor of biomedical data science and genetics at the Stanford University School of Medicine.

    "We've never observed the Neanderthal Y chromosome DNA in any human sample ever tested," Bustamante added.

    "That doesn't prove it's totally extinct, but it likely is."

    Previous studies have shown that modern human and Neanderthal lineages diverged between 400,000 and 800,000 years ago.

    The Neanderthals died out some 30,000 years ago.

    https://sg.news.yahoo.com/study-nean...013408476.html

  2. #2
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    Sounds like Horses and Donkeys. Same same but different.

  3. #3
    Balls to Monty
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    ^True, I have also seen evidence of women mating with horses and donkeys on teh internet but there is no evidence of any donkey DNA in the human genome.

  4. #4
    disturbance in the Turnip baldrick's Avatar
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    Quote Originally Posted by Looper
    no evidence of any donkey DNA in the human genome.
    what about blackheart ?

  5. #5
    ENT
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    Maybe homo sapiens sapiens women were too small hipped to successfully birth the larger boned homo sapiens neanderthalis cross breeds.

    Another take on it might be that the Neanderthal women were the predominant child bearers of the new cross breed of humans, as there was possibly a shortage of women among H. Sapiens, so Neanderthal females were the only available option.

  6. #6
    Balls to Monty
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    Quote Originally Posted by ENT
    so Neanderthal females were the only available option.
    Maybe it was a protest vote.

    Maybe homo sapiens women had started developing 'attitude' and so the blokes started searching further afield for more traditionally minded women.

  7. #7
    Thailand Expat HermantheGerman's Avatar
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    Neanderthal Noerectus ?

  8. #8
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    Neanderthals were likely firing blanks into human women

    sounds like Skegness

  9. #9
    Days Work Done! Norton's Avatar
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    Quote Originally Posted by VocalNeal
    Sounds like Horses and Donkeys. Same same but different.
    With mules and hennies as offsping. Both of which are sterile in all but rare cases. Not much good for propagation of a new hybrid species.

  10. #10
    Fresh Seaman CaptainNemo's Avatar
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    It seems more likely that Europeans are the product of some brown African Homo Sapiens' conquering the Homo Neanderthalis and raping the women, but I doubt you will find that angle presented, given the political sensitivity of the rapEUgee invasion.

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