Question

Which of the following stages of meiosis involves the division of centromere?

• A. Metaphase I
• B. Metaphase II
• C. Telophase II
• D. Anaphase II

Answer 1

The correct option is D

Anaphase II

The correct option is D.

Explanation for the correct option:

1. The sister chromatids of each chromosome begin to split and travel to the opposite ends of the cell during the anaphase II stage.
2. The shortening of the kinetochore microtubules causes separation and movement.
3. Telophase II comes before anaphase II.
4. Anaphase II during meiosis is comparable to anaphase during mitosis.

Explanation for the incorrect options:

Option A:

1. Homologous chromosomes are clustered together in metaphase I.
2. In the subsequent phase, these pairings are separated (Anaphase I).
3. Four additional cells are finally created during meiosis.
4. These cells, which might be sperm or eggs, each have 23 chromosomes.

Option B:

1. The second step of meiosis II is called metaphase II.
2. It comes after prophase II, which emphasizes centrosome migration to the polar regions of the cell and the condensing of the chromosomes.

Option C:

1. Telophase II: Once again dividing, the cells contract in the middle.
2. Four cells, each with half of the original genetic material, are the result at the end.
3. Each cell in a guy develops into a sperm.
4. For females, one cell develops into an egg, while the other three become polar bodies that are dormant.

Final answer: The stage of meiosis that involves the division of centromere is anaphase II.