Interval between mitosis and intiation of DNA replication is called :-

Options

A. `G_(2)`- Phase
B. `G_(1)`-phase
C. Karyokinesis
D. S-phase

Answer

To solve the question regarding 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 several phases, including interphase (which has G1, S, and G2 phases) and the mitotic phase (M phase).

2. **Identify the Phases**:
- **M Phase (Mitosis)**: This is where the cell divides its nucleus and cytoplasm to form two daughter cells.
- **S Phase (Synthesis Phase)**: This is the phase where DNA replication occurs, resulting in the duplication of chromosomes.

3. **Determine the Interval**: The question asks for the interval between the end of mitosis and the start of DNA replication (S phase).

4. **Identify the Correct Phase**: The phase that occurs between the end of mitosis and the beginning of the S phase is called the **G1 phase**. In this phase, the cell grows and synthesizes proteins and organelles necessary for DNA replication.

5. **Conclusion**: Therefore, the interval between mitosis and the initiation of DNA replication is known as the **G1 phase**.

### Final Answer:
The interval between mitosis and the initiation of DNA replication is called the **G1 phase**.

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