During the 1st meiostic division of human oogenesis, nodisju

Discussion in 'USMLE STEP 1' started by Guest, Dec 18, 2009.

  1. Guest

    Guest Guest

    During the 1st meiostic division of human oogenesis, nodisjunc occurs btw a pair of homologus chrom. If fertilization occurs, which is the possible no of chrom contributed by the female pronucleus?

    1. 21 or 23
    2. 21 or 25
    3. 22 or 23
    4. 22 or 24
    5. 23 or 24
  2. Guest

    Guest Guest

    4. 22 or 24

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