When does replication of centriole occur?

Options

A. Interphase
B. Prophase
C. Late prophase
D. Late telophase

Answer

**Step-by-Step Solution:**

1. **Understanding the Cell Cycle**: The cell cycle consists of several phases that a cell goes through to divide and replicate. The main phases are G1, S, G2, and M (mitosis).

2. **Identifying the Phases**:
- G1 Phase (Gap 1): The cell grows and prepares for DNA replication.
- S Phase (Synthesis): This is the phase where DNA replication occurs.
- G2 Phase (Gap 2): The cell continues to grow and prepares for mitosis.

3. **Focusing on the S Phase**: During the S phase, not only does the DNA replicate, but other cellular components also undergo replication.

4. **Replication of Centrioles**: Centrioles, which are important for cell division, also replicate during the S phase. This ensures that when the cell divides, each daughter cell will have the necessary centrioles for proper division.

5. **Conclusion**: Therefore, the replication of centrioles occurs during the S phase of interphase.

**Final Answer**: The replication of centrioles occurs in the S phase of interphase.

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