During spermatogenesis which of the following is the first cell to become haploid?

Primary spermatocyte

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Secondary spermatocyte

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Spermatid

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Spermatogonia

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Solution

The correct option is B
Secondary spermatocyte

The spermatogonia divide mitotically, and some of them undergo two rounds of mitosis to form 4 primary spermatocytes, each of which undergoes meiosis to produce 2 haploid secondary spermatocytes. Each secondary spermatocyte then undergoes mitosis to produce 2 spermatids. So the first cell to become haploid is the secondary spermatocyte.

Cell type Ploidy

Spermatogonia diploid

Primary spermatocyte diploid

Secondary spermatocytes haploid

Spermatids haploid

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Similar questions

During spermatogenesis,

why is the chromosome no of 4 daughter cells produced by the meiotic division of secondary spermatocyte is same as that of secondary spermatocyte.

since during meiosis, chromosome no reduces to half.

Arrange the following events of spermatogenesis:

i. The spermatogonia give rise to 4 primary spermatocytes (2n)

ii. The spermatogonia divide mitotically to maintain the germ cells (2n)

iii. Spermiogenesis

iv. Each primary spermatocyte gives rise to 2 secondary spermatocytes (n)

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