Which does not occur in interphase of eukaryotic cell division

Options

A. Increase of ATP synthesis
B. Increase of DNA synthesis
C. Increase of RNA synthesis
D. Reduction in cell size.

Answer

To answer the question "Which does not occur in interphase of eukaryotic cell division?", 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 the longest phase, where the cell prepares for division, accounting for about 95% of the cell cycle.

2. **Identify the Phases of Interphase**:
- Interphase is further divided into three sub-phases:
- **G1 phase (Growth 1)**: The cell grows and synthesizes proteins.
- **S phase (Synthesis)**: DNA replication occurs, leading to an increase in DNA content.
- **G2 phase (Growth 2)**: The cell continues to grow and prepares for mitosis.

3. **Analyze the Options Given**:
- **Option A: Increase of ATP synthesis**: This occurs during interphase as the cell requires energy for various processes.
- **Option B: Increase of DNA synthesis**: This occurs specifically during the S phase of interphase.
- **Option C: Increase of RNA synthesis**: This also occurs during interphase as the cell synthesizes RNA for protein production.
- **Option D: Reduction in cell size**: This does not occur during interphase. Instead, cells typically grow in size during interphase and only reduce in size during cytokinesis, which is part of the M phase.

4. **Conclusion**:
- The correct answer is **Option D: Reduction in cell size**, as this does not occur during interphase.

### Final Answer:
**Option D: Reduction in cell size does not occur in interphase of eukaryotic cell division.**