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Missing Y chromosome kept us apart from Neanderthals

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    #2
    Adam Khor
    Registered Users Posts: 5,279 ✭✭✭Adam Khor


    I didn t know that... so no first generation Neandersapiens guys?

    Although, I remember there was a time when they said most hybrid animals couldn t breed, like for example ligers, and now there's even li-ligers (lion X liger hybrids), and they can breed themselves, too. I think this hybrid business is a lot more random than usually believed...


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    #3
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 91,761 Mod ✭✭✭✭Capt'n Midnight


    Adam Khor wrote: »
    I think this hybrid business is a lot more random than usually believed...

    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1206564/
    ``HALDANE's rule'' states that, if species hybrids of one sex only are inviable or sterile, the afflicted sex is much more likely to be heterogametic (XY) than homogametic (XX). We show that most or all of the phenomena associated with HALDANE's rule can be explained by the simple hypothesis that alleles decreasing hybrid fitness are partially recessive.


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