In which phase of mitosis, centriole begins to move towards opposite pole?

Options

A. Prophase
B. Metaphase
C. Anaphase
D. Telophase

Answer

To determine in which phase of mitosis the centrioles begin to move towards opposite poles, we can analyze the phases of mitosis step by step.

### Step-by-Step Solution:

1. **Understanding Mitosis Phases**: Mitosis consists of several phases: prophase, metaphase, anaphase, and telophase. Each phase has distinct characteristics and events.

2. **Identifying Prophase**: In prophase, the chromatin condenses into visible chromosomes. This is the first phase of mitosis and is characterized by the breakdown of the nuclear envelope.

3. **Movement of Centrioles**: During prophase, the centrioles, which are located near the nucleus in animal cells, begin to separate and move towards opposite poles of the cell. This movement is crucial for the formation of the mitotic spindle.

4. **Examining Other Phases**:
- **Metaphase**: In this phase, chromosomes align at the cell's equatorial plane, but the centrioles are already positioned at the poles, so they do not move during this phase.
- **Anaphase**: This phase involves the separation of sister chromatids, which move towards the poles, but the centrioles are not moving at this time.
- **Telophase**: In telophase, the nuclear envelope reforms around the separated sets of chromosomes, and again, the centrioles are not moving.

5. **Conclusion**: Based on the analysis, the correct answer is that the centrioles begin to move towards opposite poles during **prophase**.

### Final Answer:
The phase of mitosis in which centrioles begin to move towards opposite poles is **Prophase**.

---