Which of the following phases correspond to the interval between mitosis and initiation of DNA replication

Options

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

Answer

To answer the question regarding which phase corresponds to the interval between mitosis and the initiation of DNA replication, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Cell Cycle**: The cell cycle consists of two main phases: Interphase and M phase (Mitosis). Interphase is where the cell spends most of its time and is further divided into three sub-phases: G1, S, and G2.

2. **Identify the Phases**:
- **G1 Phase (Gap 1)**: This phase occurs right after mitosis. The cell grows and carries out normal metabolic functions but does not replicate its DNA.
- **S Phase (Synthesis)**: This is the phase where DNA replication occurs, resulting in the duplication of the genetic material.
- **G2 Phase (Gap 2)**: This phase follows the S phase and involves further growth and preparation for mitosis.

3. **Determine the Interval**: The question specifically asks for the interval between the end of mitosis and the initiation of DNA replication. Since DNA replication begins in the S phase, the phase that occurs before the S phase is the G1 phase.

4. **Conclusion**: Therefore, the phase that corresponds to the interval between mitosis and the initiation of DNA replication is the **G1 phase**.

### Final Answer:
The correct answer is **G1 phase**.