Select the phase from the following where actual cell division occurs

Options

A. Quiescent stage
B. Interphase
C. `G_(1)` Phase
D. Mitosis phase

Answer

To solve the question of which phase actual cell division occurs, we will analyze each option provided:

### Step-by-Step Solution:

1. **Understanding the Options**:
- **Option A: Quiescent Stage (G0 phase)**
- This stage is characterized by cell differentiation and a loss of the ability to divide. Cells in this phase are not actively preparing to divide.
- **Conclusion**: This option is incorrect.

2. **Interphase (Option B)**:
- Interphase is often referred to as the resting phase, where the cell spends a significant amount of its life (90-95%). During this phase, the cell prepares for division but does not actually divide.
- **Conclusion**: This option is also incorrect.

3. **G1 Phase (Option C)**:
- The G1 phase is a sub-phase of interphase. While it is a critical phase for cell growth and preparation for DNA replication, it does not involve actual cell division.
- **Conclusion**: This option is incorrect as well.

4. **Mitosis Phase (Option D)**:
- The mitosis phase, also known as the M phase, is where actual cell division occurs. This phase includes several stages: prophase, metaphase, anaphase, and telophase (collectively known as karyokinesis), followed by cytokinesis, which is the division of the cytoplasm.
- **Conclusion**: This is the correct option as it is the phase where actual cell division occurs.

### Final Answer:
The correct answer is **Option D: Mitosis Phase**.

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