What is the significance of `G_0` phase?

Explanation

### Step-by-Step Text Solution:

1. **Definition of G0 Phase**: The G0 phase, also known as the quiescent phase, is a stage in the cell cycle that occurs after the G1 phase. It is characterized by a temporary exit from the active cycle of cell division.

2. **Position in the Cell Cycle**: After the G1 phase, a cell can either proceed to the S phase (where DNA replication occurs) or enter the G0 phase. This phase is essentially a resting state for the cell.

3. **Characteristics of G0 Phase**: In the G0 phase, the cell is metabolically active but not actively preparing to divide. It is in a state of rest and does not undergo cell division unless triggered by specific signals.

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