At which developmental stage is human oogenesis arrested from fetal life until ovulation at puberty?
Answer and explanation
Correct answer: D. Diplotene stage of prophase I pathway
Primary oocytes enter meiosis I during fetal life and arrest at the diplotene stage of prophase I (dictyotene). At ovulation, the surge of LH drives completion of meiosis I, and the secondary oocyte arrests at metaphase II until fertilization.
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