In which stage the DNA is doubled :-

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Cell Cycle**: The cell cycle consists of two main phases: Interphase and M phase (Mitotic phase). Interphase is where the cell prepares for division, while M phase is where the actual division occurs.

2. **Identifying the Phases of Interphase**: Interphase is further divided into three sub-phases: G1 phase (Gap 1), S phase (Synthesis), and G2 phase (Gap 2).

3. **Locating DNA Replication**: DNA replication specifically occurs during the S phase of Interphase. This is when the cell synthesizes a complete copy of the DNA in preparation for cell division.

4. **Evaluating the Options**:
- **Metaphase**: A stage in M phase where chromosomes align in the center of the cell. (Incorrect)
- **Anaphase**: A stage in M phase where sister chromatids are pulled apart. (Incorrect)
- **Interphase**: The phase that includes the S phase where DNA is replicated. (Correct)
- **Prophase**: A stage in M phase where chromosomes condense and the nuclear envelope begins to break down. (Incorrect)

5. **Conclusion**: The correct answer is that DNA is doubled during the S phase of Interphase.

**Final Answer**: Option 3: Interphase

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