Question

Hey guys!! Help me in this conceptual question.
In oogenesis before 5th month the number of oogonia are 70 lakh and at the time of birth only 20 lakh oogonia left ? why?
If the no. of oogonia is decresing so this is a wasteful process.
DONT SPAM HERE......
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Answer 1

Explanation:

In mammals, the first part of oogenesis starts in the germinal epithelium, which gives rise to the development of ovarian follicles, the functional unit of the ovary.

Oogenesis consists of several sub-processes: oocytogenesis, ootidogenesis, and finally maturation to form an ovum (oogenesis proper). Folliculogenesis is a separate sub-process that accompanies and supports all three oogenetic sub-processes.