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Question

How many sperms are formed by 4 primary spermatocytes?

A
32
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B
16
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C
4
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D
1
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Solution

The correct option is B 16
The spermatogonia divide mitotically, and some of them undergo two rounds of mitosis, each forming 4 primary spermatocytes, each of which undergoes meiosis to produce 2 haploid secondary spermatocytes. Each secondary spermatocyte then undergoes mitosis to produce 2 spermatids, which eventually become 2 sperms. Each primary spermatocyte thus, produces 4 sperms. Hence 4 primary spermatocytes would produce 16 sperms.

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