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Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G₀). This process occurs at the end of

1. G₁ phase
2. S phase
3. G₂ phase
4. M phase

Correct answer: G₁ phase

Solution

Quiescence (G₀) is entered from G₁, when a cell can either continue toward DNA synthesis or exit the cycle. This is why the transition to the inactive state occurs at the end of G₁ phase.

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