A phase of the cell cycle which lasts more than 95% of the total duration is

Options

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

Answer

To answer the question, "A phase of the cell cycle which lasts more than 95% of the total duration is," we need to analyze the phases of the cell cycle and their durations.

### Step-by-Step Solution:

1. **Understand the Cell Cycle**:
- The cell cycle consists of several phases that a cell goes through during its life. These phases include interphase and the mitotic phase (M phase).

2. **Identify the Phases of the Cell Cycle**:
- The major phases of the cell cycle are:
- **Interphase**: This includes:
- G1 phase (Gap 1)
- S phase (Synthesis)
- G2 phase (Gap 2)
- **Mitotic Phase (M phase)**: This includes:
- Prophase
- Metaphase
- Anaphase
- Telophase

3. **Duration of Each Phase**:
- Interphase is the longest phase of the cell cycle and typically lasts about 90-95% of the total duration of the cell cycle.
- The mitotic phase (M phase), which includes prophase, metaphase, anaphase, and telophase, is much shorter, usually accounting for about 5-10% of the total duration.

4. **Evaluate the Options**:
- **Prophase**: A part of the mitotic phase, thus lasts less than 5%.
- **Interphase**: This is the correct answer as it lasts more than 95% of the total duration.
- **Anaphase**: Also part of the mitotic phase, thus lasts less than 5%.
- **Telophase**: Another part of the mitotic phase, thus lasts less than 5%.

5. **Conclusion**:
- The phase of the cell cycle that lasts more than 95% of the total duration is **Interphase**.

### Final Answer:
The phase of the cell cycle which lasts more than 95% of the total duration is **Interphase**.

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