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MEIOSIS question

Discussion in 'DAT Discussions' started by AFF2009, May 29, 2008.

  1. AFF2009

    2+ Year Member

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    somebody please confirm this! thank u!

    male:
    at birth: spermatogonium (2n)
    at puberty to adulthood:spermatid :thumbdown:

    female:
    at birth: oogonium (2n)
    at puberty: primary oocyte :thumbdown: prophase 1 (NOT SURE)
    at ovulation: secondary oocyte :thumbdown: at prophase 2 (completes meiosis 2 after penetration of the sperm)
     
  2. AFF2009

    2+ Year Member

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    Two more questions:


    1) Has anybody heard of NEUROBIONTS or NEUTROBIONTS in terms of the evolutionary deverloment? does anyone know whether they were developed prior to protobionts?

    2) does anybody know if where does the lymphtic system drain to? I know that the fluid is picked up from the interstial fluid by the thorasic duct but i have different sources that one says it's drianed to the jugluar vein and the other says superior vena cava.

    thanks
     

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