Nuclear envelope reappears at

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Cell Cycle Phases**: The cell cycle consists of several phases, including prophase, metaphase, anaphase, and telophase. Each of these phases has distinct events that occur during mitosis.

2. **Identifying the Phases**:
- **Prophase**: This is the first stage of mitosis where chromosomes condense and become visible. The nuclear envelope begins to break down, but it does not reappear in this phase.
- **Metaphase**: In this phase, chromosomes align at the metaphase plate. The structure of the chromosomes is clearly visible, but the nuclear envelope is still not present.
- **Anaphase**: During anaphase, the sister chromatids are pulled apart to opposite poles of the cell. The nuclear envelope does not reappear in this phase either.
- **Telophase**: This is the final stage of mitosis. Here, the chromosomes reach the opposite poles of the cell and begin to unwind. The nuclear envelope reappears around each set of chromosomes, marking the end of mitosis.

3. **Conclusion**: The nuclear envelope reappears during the **telophase** of mitosis.

**Final Answer**: The nuclear envelope reappears at **telophase**.

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