The G1 and G2 phases are also known as –. During G1 and G2, the cell increases in both size and protein content. These phases serve as – to make sure the conditions are suitable for the next phase in the –.

The G1 and G2 phases are also known as "gap phases." During G1 and G2, the cell increases in both size and protein content. These phases serve as checkpoints to make sure the conditions are suitable for the next phase in the cell cycle.