Asked by Lindsay Singer on Jun 25, 2024
Verified
What is the difference between the chromosomes in a secondary spermatocyte and those in a spermatid?
A) The chromosomes in secondary spermatocytes consist of two chromatids; the ones in the spermatid consist of only one chromatid.
B) The chromosomes in a secondary spermatocyte consist of homologous chromosomes; the ones in the spermatid consist of two chromatids.
C) The chromosomes in the secondary spermatocyte consist of one chromatid; the ones in the spermatid consist of two chromatids.
D) The secondary spermatocyte is diploid; the spermatid is haploid.
E) The secondary spermatocyte is haploid; the spermatid is diploid.
Secondary Spermatocyte
A cell that originates from the division of a primary spermatocyte during spermatogenesis, later undergoing meiosis II to form spermatids.
Spermatid
A haploid male gametid that results from division of secondary spermatocytes and develops into a mature sperm cell.
Chromatids
Each of the two strands of a chromosome that are joined together by a single centromere before cell division occurs.
- Describe the differences in chromosome structure at various stages of cell division.
Verified Answer
GT
Gurjeet ThiaraJun 29, 2024
Final Answer :
A
Explanation :
Secondary spermatocytes are formed by meiosis I which results in two haploid cells, each consisting of two chromatids. During the second meiotic division, the two chromatids separate, resulting in four haploid cells, each consisting of a single chromatid. These cells are known as spermatids. Thus, the chromosomes in a secondary spermatocyte consist of two chromatids while the ones in a spermatid consist of only one chromatid. Therefore, option A is correct.
Learning Objectives
- Describe the differences in chromosome structure at various stages of cell division.