Interkinesis differs from interphase in absence of

Options

A. DNA replication
B. Histone protein synthesis
C. Centriole duplication
D. Both (1) & (2)

Answer

### Step-by-Step Solution:

1. **Understanding Interphase**:
- Interphase is a part of the cell cycle where the cell prepares for division. It consists of several phases: G1 (first gap), S (synthesis), and G2 (second gap). During this time, the cell grows, duplicates its DNA, and synthesizes proteins necessary for mitosis or meiosis.

2. **Understanding Interkinesis**:
- Interkinesis is a phase that occurs between the two meiotic divisions (meiosis I and meiosis II). It is a short resting period where the cell does not undergo DNA replication.

3. **Key Differences**:
- **DNA Replication**: In interphase, DNA replication occurs during the S phase. However, in interkinesis, there is no DNA replication. This is a significant difference.
- **Histone Protein Synthesis**: Histone proteins, which help package DNA, are synthesized during the G1 and G2 phases of interphase. In interkinesis, this synthesis does not occur.
- **Centriole Duplication**: Centriole duplication occurs in interphase but not during interkinesis.

4. **Conclusion**:
- Therefore, interkinesis differs from interphase primarily in the absence of DNA replication and histone protein synthesis. The correct answer is that interkinesis lacks both DNA replication and histone protein synthesis.

### Final Answer:
Interkinesis differs from interphase in the absence of DNA replication and histone protein synthesis.