Answer :
G1, S, and G2. The G1 phase is the stage of cell growth. The S phase involves DNA replication. The G2 phase involves the growth and development of organelles.
The interphase of the cell cycle is basically composed of three phases:
a) G1 Phase – In this phase mRNA and protein is synthesized and the cell grow in size
b) S phase – In this phase the DNA replicates and it occurs between G1 and G2 phase.
c) G2 Phase – In this phase the cell grows continuously and it’s a checkpoint before the cell enters into the M phase of the cell life cycle