Question

During spermatogenesis, the first meiotic division occurs in

• A. Sertoli cells
• B. Spermatids
• C. Spermatozoans
• D. Primary spermatocytes
• E. Secondary spermatocytes

Answer 1

Answer: (D)

Primary spermatocytes

The spermatogonia present on the inside wall of seminiferous tubules multiply by mitotic division and increase in number. Each spermatogonium is diploid and contains 46 chromosomes. Some of the spermatogonia called primary spermatocytes periodically undergo meiosis. A primary spermatocyte completes its first meiotic division and forms two equal haploid cells called secondary spermatocyte which has only 23 chromosomes each.

So, the correct option is 'Primary spermatocytes'.