PPQ: Explain the process of Oogenesis.


Before birth:

  • Diploid germinal epithelium cells of the ovary divide by mitosis to form diploid oogonia and more germinal epithelium cells. 
  • These oogonia divide many times by mitosis and enlarge to form diploid primary oocytes, and more oogonia.
  • The primary oocytes begin meiosis I but stop at prophase I.
  • At the same time, germinal epithelium cells divide to form primary follicles, which surround the primary oocytes.

Following puberty:

  • A primary oocyte…


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