<prompt> DNA synthesis occurs in phase-G1G2SM  <response>: Ans. is c i.e., S o In the cell, the replication of the DNA occurs only at a specific time during the life of the cell. This period is referred to as the synthetic phase. The various phases of cell cycle are in sequence G0 - G1 - S - G2 - M. G1 : Presynthetic phaseinterval. S : Synthetic phase DNA synthesis. G2 : Post-synthetic phasepremitotic phaseinterval. M : Mitotic phase: Cells are produced which either directly reenter next cycle or pass into non-proliferative G0 phase. G0 : the Quiescent state. 