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Science Forum

Science Forum

  1. 11 Dec '09 07:09
    The onset of reproductive barriers, or hybrid sterility, is a means of reinforcing genetic incompatibilities between isolated populations, leading to speciation. A handful of genes that underlie hybrid sterility have been discovered, but their molecular mechanism is generally unclear. Bayes and Malik reveal that the hybrid sterility gene Odysseus-site Homeobox (OdsH), which encodes a satellite-DNA binding protein, shows differential DNA binding patterns between the species Drosophila mauritiana and D. simulans; OdsH derived from D. mauritiana localizes to the D. simulans Y chromosome, whereas OdsH derived from D. simulans does not. The incorrect expression, localization, and endurance of the OdsH protein appear to affect spermatogenesis in hybrid males, explaining the mechanism underlying hybrid sterility between these species. Thus, genetic incompatibilities between satellite-DNA and their binding proteins may represent a general basis for hybrid sterility in animals.
  2. Standard member smw6869
    Granny
    12 Dec '09 00:20
    Originally posted by Diodorus Siculus
    The onset of reproductive barriers, or hybrid sterility, is a means of reinforcing genetic incompatibilities between isolated populations, leading to speciation. A handful of genes that underlie hybrid sterility have been discovered, but their molecular mechanism is generally unclear. Bayes and Malik reveal that the hybrid sterility gene Odysseus-si ...[text shortened]... te-DNA and their binding proteins may represent a general basis for hybrid sterility in animals.
    So, you're telling me that all those years i've been trying to get pregnant with a chimp has been all for naught ?

    GRANNY.
  3. 12 Dec '09 00:46
    Originally posted by smw6869
    So, you're telling me that all those years i've been trying to get pregnant with a chimp has been all for naught ?

    GRANNY.
    Well... Not for naught...

  4. Subscriber AThousandYoung
    Do ya think?
    24 Jan '10 04:36
    Originally posted by smw6869
    So, you're telling me that all those years i've been trying to get pregnant with a chimp has been all for naught ?

    GRANNY.
    No no no no no. It's the BABY that will be sterile.
  5. Standard member menace71
    Can't win a game of
    28 Jan '10 05:30
    Horse & Ass cross is a Mule right? A male & female Mule can't reproduce however they being the hybrid.



    Manny
  6. Subscriber AThousandYoung
    Do ya think?
    29 Jan '10 18:34 / 1 edit
    Originally posted by menace71
    Horse & Ass cross is a Mule right? A male & female Mule can't reproduce however they being the hybrid.



    Manny
    Mule or Hinny depending on which one's the Daddy and which is the Mommy. Both are sterile. A few female mules and one female hinny were shown to be fertile, but these are very rare.