Question

Arrange the following events that happen during meiosis in the correct order of occurrence:

1. Formation of a dyad of cells
2. Separation of sister chromatids and migration towards the opposite poles
3. Separation of homologous chromosomes and migration towards the opposite poles
4. Formation of four haploid cells

• A. I; III; II; IV
• B. III; I; II; IV
• C. I; II; III; IV
• D. II; I; III; IV

Answer 1

The correct option is B III; I; II; IV

The four events are a part of meiosis I. The correct sequence of events is:
- Separation of homologous chromosomes and migration towards the opposite poles. This occurs during anaphase I of meiosis I.
- Formation of a dyad of cells occurs during cytokinesis, which happens after telophase I of meiosis I.
- Separation of sister chromatids and migration towards the opposite poles occurs during anaphase II of meiosis II.
- Formation of four haploid cells happens during telophase II of meiosis II, which is the last step of meiotic cell division.