Which of the Following is a Correct Sequence of Cells

Question

Which of the following is a correct sequence of cells in spermatogenesis?
A) spermatogonium -> primary spermatocyte -> secondary spermatocyte
B) spermatogonium -> secondary spermatocyte -> primary spermatocyte
C) primary spermatocyte -> secondary spermatocyte -> spermatogonium
D) primary spermatocyte -> spermatogonium -> secondary spermatocyte
E) none of these choices are correct

Accepted Answer

Spermatogenesis begins with a diploid spermatogonium cell that undergoes mitotic divisions to produce more spermatogonia and a primary spermatocyte. The primary spermatocyte then undergoes meiosis I to produce two haploid secondary spermatocytes. Each secondary spermatocyte then undergoes meiosis II to produce two haploid spermatids. These spermatids then differentiate into mature sperm cells through a process called spermiogenesis. Therefore, the correct sequence is spermatogonium -> primary spermatocyte -> secondary spermatocyte.