The Number of Chromosomes in Secondary Spermatocytes is Fewer Than

Question

The number of chromosomes in secondary spermatocytes is fewer than in primary spermatocytes because
A)sister chromatids are separated during meiosis II.
B)sister chromatids are separated during meiosis I.
C)homologous pairs are separated during meiosis II.
D)homologous pairs are separated during meiosis I.

Accepted Answer

Homologous pairs are separated during meiosis I, leading to a reduction in the chromosome number from diploid (2n) to haploid (n) in the resulting daughter cells (in this case, secondary spermatocytes). Meiosis II then separates the sister chromatids, resulting in the formation of four haploid spermatids.