![]() ![]() ![]() M is the actual period of cell division, consisting of prophase, metaphase, anaphase, telophase, and cytokinesis.Ĭhromosomes were first named by cytologists viewing dividing cells through a microscope.Cells check to make sure DNA replication has successfully completed, and make any necessary repairs. G2 is the period between the end of DNA replication and the start of cell division.S is the period of DNA synthesis, where cells replicate their chromosomes.Cells grow and monitor their environment to determine whether they should initiate another round of cell division. G1 is the period after cell division, and before the start of DNA replication.The cell cycle diagram on the left shows that a cell division cycle consists of 4 stages: Cells that stop dividing exit the G1 phase of the cell cycle into a so-called G0 state.Ĭells reproduce genetically identical copies of themselves by cycles of cell growth and division. Cell division cycle, figure from Wikipedia. ![]()
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