At what phase of meiosis there are two cells, each with separated siter chromatids that have been moved to opposite spindle poles?

Options

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

Explanation

To determine at what phase of meiosis there are two cells, each with separated sister chromatids that have been moved to opposite spindle poles, we can break down the process step by step.

### Step-by-Step Solution:

1. **Understanding Meiosis**: Meiosis consists of two main stages: Meiosis I and Meiosis II. Each of these stages has several phases, including prophase, metaphase, anaphase, and telophase.

2. **Identifying the Relevant Phase**: The question specifically asks about the phase where sister chromatids are separated and moved to opposite poles. This process occurs during the anaphase phase of meiosis.

3. **Differentiating Between Meiosis I and Meiosis II**:
- In Meiosis I, homologous chromosomes are separated, but sister chromatids remain together.
- In Meiosis II, which is similar to mitosis, the sister chromatids are separated.

4. **Focusing on Anaphase II**: During Anaphase II, the sister chromatids are pulled apart by the spindle fibers (kinetochore microtubules) and move toward opposite spindle poles. This results in two cells, each containing separated sister chromatids.

5. **Conclusion**: Therefore, the correct phase of meiosis where there are two cells, each with separated sister chromatids that have been moved to opposite spindle poles, is **Anaphase II**.

### Final Answer:
The correct answer is **Anaphase II**.

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