<P> There are three stages of cellular interphase, with each phase ending when a cellular checkpoint checks the accuracy of the stage's completion before proceeding to the next . The stages of interphase are: </P> <Ul> <Li> G (Gap 1), in which the cell grows and functions normally . During this time, a high amount of protein synthesis occurs and the cell grows (to about double its original size) - more organelles are produced and the volume of the cytoplasm increases . If the cell is not to divide again, it will enter G . </Li> <Li> Synthesis (S), in which the cell duplicates its DNA (via semiconservative replication). </Li> <Li> G (Gap 2), in which the cell resumes its growth in preparation for division . The mitochondria divide and the cell continues to grow until mitosis begins . In plants, chloroplasts also divide during G2 . </Li> <Li> In addition, some cells that do not divide often or ever, enter a stage called G (Gap zero), which is either a stage separate from interphase or an extended G . </Li> </Ul> <Li> G (Gap 1), in which the cell grows and functions normally . During this time, a high amount of protein synthesis occurs and the cell grows (to about double its original size) - more organelles are produced and the volume of the cytoplasm increases . If the cell is not to divide again, it will enter G . </Li> <Li> Synthesis (S), in which the cell duplicates its DNA (via semiconservative replication). </Li>

During which stage of the cell cycle does a cell grow to approximately double its original size