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Human Reproduction — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Reproduction1 Mark
Question
Menstrual cycles are absent during pregnancy. Why?
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Answer

The high levels of progesterone and estrogens during pregnancy suppress the release of gonadotropins required for the development of new follicles. Therefore, new cycle cannot be initiated.

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