Question

Arrange the following with regard to their occurrence in spermatogenesis.
(a) Spermatogonia (b) Secondary spermatocyte (c) Spermatogonial stem cells (d) Primary spermatocyte (e) Spermatid

• A. c - d - b - a - e
• B. c - a - d - b - e
• C. a - b - c - d - e
• D. c - d - a - b - e

Answer 1

Answer: (B)

c - a - d - b - e

• Spermatogenesis is the process in which spermatozoa (male gametes) are formed from the primordial germ cells.
• Spermatogonia are produced by the differentiation of the spermatogonial stem cell. This spermatogonium undergoes mitosis to produce 2 primary spermatocytes.
• This primary spermatocyte will undergo meiosis I to produce two haploid secondary spermatocytes. These two secondary spermatocytes undergo meiosis II to form four haploid spermatids.
• Each spermatid then forms spermatozoa by the process of spermiogenesis.

Thus, the correct answer is option B.