During meiosis, the sister chromatids separate during-

Options

A. Anaphase II
B. Metaphase II
C. The S phase
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Meiosis**: Meiosis is a type of cell division that reduces the chromosome number by half and results in the production of four haploid cells. It consists of two main stages: Meiosis I and Meiosis II.

2. **Identifying the Phases of Meiosis**:
- Meiosis I includes Prophase I, Metaphase I, Anaphase I, and Telophase I.
- Meiosis II includes Prophase II, Metaphase II, Anaphase II, and Telophase II.

3. **Sister Chromatid Definition**: Sister chromatids are identical copies of a chromosome, which are joined together by a centromere. They are formed during the S phase of the cell cycle.

4. **Separation of Sister Chromatids**:
- In Meiosis I, homologous chromosomes are separated, but sister chromatids remain together.
- In Meiosis II, the sister chromatids are separated.

5. **Identifying the Correct Stage**:
- The separation of sister chromatids occurs specifically during Anaphase II of Meiosis II.
- During Anaphase II, the centromeres split, and the sister chromatids are pulled apart to opposite poles of the cell.

6. **Conclusion**: Therefore, the correct answer to the question "During meiosis, the sister chromatids separate during-" is **Anaphase II**.

**Final Answer**: Anaphase II

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