Question

Suppose that diploid cells of the seminiferous tubules encounter errors during the cell cycle and mitosis. This results in the primary spermatocytes having a 4n number of chromosomes. Assuming that meiosis proceeds normally, which of the following would be true?

a) sperm cells would have an n number of chromosomes.b) sperm cells would have a 2n number of chromosomes.c) secondary spermatocytes would have a 4n number of chromosomes.d) secondary spermatocytes would have an n number of chromosomes.

Answer 1

B

Explanation:

Primary spermatocytes undergo meiosis for the production of sperm. In meiosis one parental cell produce four daughter cells with half the number of chromosomes in each cell.

As given here; primary spermatocytes having a 4n number of chromosomes so after meiosis, each sperm cells would have a 2n number of chromosomes, because each daughter cell contain half the number of chromosome as compared to parental cell, so 4n parental cell will produce 2n daughter cell in meiosis.