Please answer and explain each choice: topic: differences beetween Mitosis and M
ID: 218899 • Letter: P
Question
Please answer and explain each choice:
topic: differences beetween Mitosis and Meiosis
Which of the following statements correctly identifies a key difference between mitosis and meiosis?
A. In metaphase of mitosis, replicated chromosomes line up in single file; in metaphase II of meiosis, replicated chromosomes line up on opposite sides of the metaphase plate.
B. During anaphase of mitosis, homologous chromosomes separate; during anaphase of meiosis I, sister chromatids separate.
C. At the end of telophase of mitosis, the daughter cells are identical to each other; at the end of meiosis I, the daughter cells are identical to the parent cell.
D. During metaphase of mitosis, centromeres are present directly on the metaphase plate; during metaphase of meiosis I, there are no centromeres on the metaphase plate.
Explanation / Answer
The correct option is D. During metaphase of mitosis, centromeres are present directly on the metaphase plate; during metaphase of meiosis I, there are no centromeres on the metaphase plate.
The key differences between both process mitosis and meiosis appear during meiosis I. The process of synapsis and crossing over occur during prophase I and homologous chromosomes are separated during the process of meiosis I and sister chromatids are separated in the process of mitosis. While the position of the centromeres relative to the equatorial plate may appear a trivial point, which is representative of the fact that homologous chromosomes line up on opposite sides of the equatorial plate in meiosis process in contrast to the position of each chromosome directly upon the metaphase plate in the process of mitosis.