Which of the following occurs in anaphase stage of cell division?

Options

A. Formation of dyads
B. Formation of spindle fibres
C. Disappearance of spindle fibres
D. Reappearance of nucleolus

Answer

To answer the question "Which of the following occurs in the anaphase stage of cell division?", we need to analyze the options provided and understand what happens during the anaphase stage of cell division.

### Step-by-Step Solution:

1. **Understand Anaphase**: Anaphase is a stage in both mitosis and meiosis where the chromosomes are separated and pulled towards opposite poles of the cell. This is crucial for ensuring that each daughter cell receives an equal set of chromosomes.

2. **Evaluate the Options**:
- **Option 1: Formation of Tides**: This option is misleading. In anaphase, the sister chromatids are separated and pulled apart, but the term "formation of tides" is not standard terminology in cell division.
- **Option 2: Formation of Spindle Fibers**: This occurs during prophase, not anaphase. Therefore, this option is incorrect.
- **Option 3: Disappearance of Spindle Fibers**: This happens during telophase, not anaphase. So, this option is also incorrect.
- **Option 4: Reappearance of Nucleolus**: The nucleolus reappears during telophase, not anaphase. Thus, this option is incorrect as well.

3. **Conclusion**: Based on the analysis of the options, none of the provided options correctly describe what occurs during anaphase. The key event in anaphase is the separation of sister chromatids and their movement towards opposite poles.

### Final Answer:
None of the options accurately describe the events that occur during anaphase. The correct answer should focus on the separation of sister chromatids.