Name four sub-phases of cell-cycle.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Cell Cycle**: The cell cycle is a series of events that take place in a cell leading to its division and replication. It consists of several phases that prepare the cell for division.

2. **Identifying the Main Phases**: The cell cycle can be broadly divided into two main phases: Interphase and M phase (Mitotic phase). Interphase is where the cell prepares for division, while M phase is where the actual division occurs.

3. **Sub-Phases of Interphase**: Interphase itself is divided into three sub-phases:
- **G1 Phase (Gap 1 Phase)**: This is the first sub-phase where the cell grows in size, synthesizes RNA, and produces proteins and organelles.
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