What is the number of primary follicles left | vedclass

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(A) During fetal development,millions of oogonia are formed within each fetal ovary. No more oogonia are formed or added after birth.Each oogonium sta

Vedclass · Accepted Answer

$60,000-80,000$

Vedclass · Answer

(A) During fetal development,millions of oogonia are formed within each fetal ovary. No more oogonia are formed or added after birth.Each oogonium starts division and enters into prophase-$I$ of the meiotic division and gets temporarily arrested at that stage,called primary oocytes.Each primary oocyte gets surrounded by a layer of granulosa cells and is called the primary follicle.$A$ large number of these follicles degenerate during the phase from birth to puberty.Therefore,at puberty,only $60,000-80,000$ primary follicles are left in each ovary.

What is the number of primary follicles left in each ovary at puberty?

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