Name main phases of a cell cycle

Explanation

**Step-by-Step 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 duplication. It is essential for growth, development, and repair in multicellular organisms.

2. **Main Phases of the Cell Cycle**: The cell cycle is primarily divided into two main phases:
- **Interphase (I phase)**: This is the phase where the cell prepares for division. It is further divided into three sub-phases:
- **GAP1 Phase (G1)**: The cell grows and synthesizes proteins necessary for DNA replication.
- **S Phase (S)**: DNA replication occurs, resulting in the duplication of chromosomes.
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