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  4. In a human female, if the duration of her menstrual cycle is of 34 days. What is the duration of the luteal phase and at what day ovulation occurs in this woman?

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Q. In a human female, if the duration of her menstrual cycle is of 34 days. What is the duration of the luteal phase and at what day ovulation occurs in this woman?

NTA AbhyasNTA Abhyas 2020Human Reproduction

Solution:

Reproductive cycle of the primate female is called menstrual cycle. Among all three phases of menstrual cycle, the luteal phase or secretary phase is most constant, fixed and is duration of 14 days.
Day of ovulation in woman = (Total no. of days in menstrual cycle - 14)= 34 - 14 =20