Why are menstrual cycles absent during pregnancy?

Why are menstrual cycles absent during pregnancy?
Why are menstrual cycles absent during pregnancy-
Menstrual cycle The reproductive cycle in female primates is known as the menstrual cycle. In humans, the cycle repeats after every 28 days. It consists of 4 ph

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Tamil Solution] Menstrual cycle ceases during pregnancy .

NCERT Exemplar: Human Reproduction - Biology Class 12 - NEET PDF Download

Why are menstrual cycles absent during pregnancy?

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Menstrual cycle

Menstrual Cycle

NCERT Ebook for Human Reproduction - Human Reproduction - Chapter 3 - NCERT Biology - XII