The separated homologous chromosomes of a pair move towards opposite poles during

Options

A. metaphase I
B. anaphase I
C. metaphase II
D. anaphase II

Answer

To solve the question regarding the movement of separated homologous chromosomes towards opposite poles, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Chromosome Separation**: In cell division, chromosomes undergo separation during specific phases. It is essential to know the difference between homologous chromosomes and sister chromatids.

2. **Identifying the Phases**: The question refers to two types of cell division: meiosis and mitosis. Meiosis consists of two main stages: meiosis I and meiosis II, each having its own anaphase.

3. **Analyzing the Options**:
- **Metaphase I**: This is the stage where homologous chromosomes align at the cell's equatorial plate, but they do not separate yet.
- **Anaphase I**: This is the stage where homologous chromosomes are separated and move towards opposite poles of the cell.
- **Metaphase II**: This is similar to metaphase in mitosis, where chromosomes align at the equatorial plate again, but no separation occurs.
- **Anaphase II**: This is the stage where sister chromatids are separated and move towards opposite poles.

4. **Conclusion**: Since the question specifically asks about the separation of homologous chromosomes, the correct answer is **Anaphase I**. This is the phase where homologous chromosomes are pulled apart to opposite poles.

### Final Answer:
The separated homologous chromosomes of a pair move towards opposite poles during **Anaphase I**.

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