Question

The first meiotic division during spermatogenesis takes place when:

• A. Primary spermatocytes divide to form secondary spermatocytes
• B. Secondary spermatocytes divide to form spermatids
• C. Spermatogonia divide to form primary spermatocytes
• D. Spermatids to spermatozoa

Answer 1

Answer: (A)

Spermatogenesis is a highly specialized process of cellular differentiation resulting in the formation of functional spermatozoa. Spermatogenesis begins with a diploid spermatogonium in the seminiferous tubules, which divides mitotically to produce two diploid primary spermatocytes.
The primary spermatocyte then undergoes meiosis I to produce two haploid secondary spermatocytes.
The haploid secondary spermatocytes undergo meiosis II to produce four haploid spermatids.