The most dramtic period of the cell cycle is

Options

A. `G_(1)`
B. `G_(2)` phase
C. S phase
D. M phase

Answer

**Step-by-Step Solution:**

1. **Understanding the Cell Cycle**: The cell cycle is a series of events that cells go through as they grow and divide. It consists of two main phases: Interphase and M phase (Mitotic phase).

2. **Breaking Down Interphase**: Interphase is further divided into three sub-phases:
- **G1 Phase (Gap 1)**: The cell grows and synthesizes proteins necessary for cell division.
- **S Phase (Synthesis)**: The cell replicates its DNA, ensuring that each daughter cell will have a complete set of chromosomes.
- **G2 Phase (Gap 2)**: The cell continues to grow and prepares for mitosis.

3. **Understanding the M Phase**: The M phase is where the actual cell division occurs. It is divided into two main processes:
- **Karyokinesis**: This is the division of the nucleus.
- **Cytokinesis**: This is the division of the cytoplasm, resulting in two separate daughter cells.

4. **Identifying the Most Dramatic Phase**: The M phase is considered the most dramatic period of the cell cycle because it involves the physical separation of the cell into two new cells, which is a significant and observable change.

5. **Evaluating the Options**: The question provides options (G1, G2, S, M). Based on the explanation:
- G1 is incorrect.
- G2 is incorrect.
- S is incorrect.
- M is the correct answer.

6. **Conclusion**: Therefore, the most dramatic period of the cell cycle is the **M phase**.

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