During cell growth, DNA synthesis takes place in

Options

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

Answer

To solve the question "During cell growth, DNA synthesis takes place in," we can follow these steps:

### Step-by-Step Solution:

1. **Understand Cell Cycle Phases**: The cell cycle is divided into several phases, primarily consisting of Interphase and the M phase (mitosis). Interphase is crucial for cell growth and preparation for division.

2. **Identify Interphase Components**: Interphase is further divided into three distinct phases:
- **G1 Phase (Gap 1)**: This is the first phase after mitosis where the cell grows and synthesizes RNA and proteins.
- **S Phase (Synthesis)**: This is the phase where DNA synthesis occurs. The cell replicates its DNA in preparation for cell division.
- **G2 Phase (Gap 2)**: This phase follows DNA synthesis and involves further growth and preparation for mitosis.

3. **Focus on DNA Synthesis**: Since the question specifically asks about DNA synthesis, we need to identify which phase is responsible for this process. The S phase is where the actual replication of DNA takes place.

4. **Conclusion**: Based on the understanding of the cell cycle, we conclude that during cell growth, DNA synthesis occurs in the S phase of Interphase.

### Final Answer:
During cell growth, DNA synthesis takes place in the **S phase**.

---