Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres :

Options

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

Answer

To identify the meiotic stage in which homologous chromosomes separate while sister chromatids remain associated at their centromeres, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Meiosis**: Meiosis consists of two main stages: Meiosis I and Meiosis II. Each of these stages has distinct phases.

2. **Identify the Phases of Meiosis I**: Meiosis I includes Prophase I, Metaphase I, Anaphase I, and Telophase I. During this stage, homologous chromosomes pair up and then separate.

3. **Focus on Anaphase I**: In Anaphase I, homologous chromosomes are pulled apart to opposite poles of the cell. However, the sister chromatids of each chromosome remain attached at their centromeres.

4. **Confirm the Separation of Homologous Chromosomes**: Since the question specifically asks for the stage where homologous chromosomes separate while sister chromatids remain together, Anaphase I is the correct answer.

5. **Conclusion**: Therefore, the meiotic stage in which homologous chromosomes separate while sister chromatids remain associated at their centromeres is **Anaphase I**.

### Final Answer:
**Anaphase I**

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