During anaphase I of meiosis

Options

A. homologous chromosomes separate
B. non-homologous chromosomes separate
C. sister chromatids chromosomes separate
D. non-sister chromatids chromosomes separate.

Explanation

**Step-by-Step Solution:**

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

2. **Phases of Meiosis I**: Meiosis I includes several phases: Prophase I, Metaphase I, Anaphase I, and Telophase I. Each phase has distinct events that contribute to the overall process of meiosis.

3. **Focus on Anaphase I**: During Anaphase I, the key event is the separation of homologous chromosomes. Homologous chromosomes are pairs of chromosomes (one from each parent) that are similar in shape, size, and genetic content.

4. **Separation of Homologous Chromosomes**: In Anaphase I, the homologous chromosomes are pulled apart by spindle fibers and move toward opposite poles of the cell. This is crucial for reducing the chromosome number in the resulting daughter cells.

5. **Sister Chromatids Remain Together**: It is important to note that while homologous chromosomes separate during Anaphase I, the sister chromatids (the two identical halves of a duplicated chromosome) remain attached at their centromeres. They do not separate until Anaphase II of meiosis.

6. **Conclusion**: Based on the events of Anaphase I, the correct answer to the question is that homologous chromosomes separate, while sister chromatids remain together.

**Final Answer**: During Anaphase I of meiosis, homologous chromosomes separate.

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