Question

Which of the following best describes sperm production in the male human reproductive system?

A- One diploid cell, with 46 chromosomes, undergoes meiosis to form four haploid sperm cells, with 23 chromosomes each.
B- Four haploid cells, with 23 chromosomes each, undergo mitosis to form one haploid sperm cell, with 23 chromosomes.
C- One diploid cell, with 46 chromosomes, undergoes mitosis to form four diploid sperm cells, with 46 chromosomes each.
D- Four haploid cells, with 23 chromosomes each, undergo meiosis to form one diploid sperm cell, with 46 chromosomes.

Answer 1

The correct answer is A.
In human male gonads, diploid cells with 46 chromosomes consisted of 2 chromatids undergo a process of meiosis to form 4 haploid sperm cells.
In the process of meiosis, the two sets of chromosomes are firstly divided into two cells with a haploid number of chromosomes, 23.
These two cells undergo a second set of divisions in which each chromosome is divided into two chromatids, resulting in 4 cells with 23 chromosomes