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Would like to know . . . pls

Discussion in 'DAT Discussions' started by AFUA, Jul 17, 2006.

  1. AFUA

    2+ Year Member

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    Would someone please be gracious to put me out of my inqusitiveness(aka misery, if studying for the DAT) by telling me what the infamous sea urchin question is? Did a search, couldn't locate it.
    Thanks.
     
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  3. KHANSAHAAB

    KHANSAHAAB Senior Member
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    What is the purpose of the fertilization membrane in sea urchins after fertilzation. Answer: to prevent fertilization by more than one sperm.
     
  4. DDS:)

    DDS:) Senior Member
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    Explainations: After sperm enters the nucleus, there's this cortical reaction, cortical granules fuse with the egg membrane, this separates the vitelline layer from the plasma membrane and prevents polyspermy.
     
  5. AFUA

    2+ Year Member

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    Thank you.
     

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