Synthesis phase



A stage of interphase wherein the eukaryotic somatic cell makes a copy of its DNA (via DNA replication) (hence the name)


The Synthesis phase occurs in between two Gap phases (Gap 1 and Gap 2). By the end of Gap 1 phase, the cell will decide if it will proceed to the Synthesis phase (S phase) or if it will enter a period of dormancy called Gap 0 phase. The transition of the cell from Gap 1 to S phase is determined by certain factors, e.g. levels of nutrients, growth factors and energy.


  • S phase

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