Dictionary > Interphase


The phase in the life cycle of a cell wherein the cell grows in size, replicates its DNA, and prepares for cell division
In eukaryotes, the cell cycle is a cyclical series of biological events that certain asexual cells go through. In essence, the cell cycle is highlighted by a sequence of events such as the duplication of DNA via DNA replication, in preparation to cell division wherein the parent cell divides and gives rise to two genetically identical daughter cells. The cell cycle is comprised of these fundamental events: (1) resting phase (Gap 0), (2) interphase (Gap 1, S phase, Gap 2), and (3) cell division (i.e. mitotic phase and cytokinesis).

In the cell cycle, the interphase is the period prior to cell division. Compared with the duration of the mitotic phase, the interphase generally has longer duration. In interphase, there is no cell division occurring at this phase. Rather, it is highlighted by cell growth and DNA replication. It is comprised of three stages: Gap 1 (G1), S phase, and Gap 2 (G2).

During G1, the cell typically undergoes growth (i.e. increases in cell size). In S phase, the cell makes a copy of its DNA. In G2, the cell continues to grow and then prepares for cell division.

Word origin: inter (between) + phase (from phasis, appearance)

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