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What is the stage of the cell cycle at which primary oocytes are arrested?(a) Prophase I(b) Metaphase I(c) Prophase II(d) Metaphase IIThe question was posed to me in final exam.This intriguing question originated from Human Reproduction topic in chapter Human Reproduction of Biology – Class 12

Answer»

Right option is (a) Prophase I

The best explanation: OOGONIA are FORMED during FETAL development. Soon they start undergoing MEIOSIS but are arrested at Prophase I awaiting further cues of division. Oogonia at this stage are called primary OOCYTES.



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