Q2 of 48 Page 22

Meiotic division during oogenesis is different from that in spermatogenesis. Explain how and why?

1. Meiotic division during oogenesis is different from the one that occurs in spermatogenesis in terms of unequal division during oogenesis.


2. In spermatogenesis, all the four spermatids formed are equally functional in nature.


3. Whereas in oogenesis, unequal division takes place. In which major part of the cytoplasm remains in one ovum only.


4. Only a minor part of the ovum is separated as a polar body.


5. This division forms only one such ovum which is functional in nature.


This shows that, in spermatogenesis, all four spermatids formed are functional whereas in oogenesis only one ovum is functional.


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