Editing Cell biology (section)

=== Cell cycle phases ===
The cell cycle is a four-stage process that a cell goes through as it develops and divides. It includes Gap 1 (G1), synthesis (S), Gap 2 (G2), and mitosis (M). The cell either restarts the cycle from G1 or leaves the cycle through G0 after completing the cycle. The cell can progress from G0 through terminal differentiation. Finally, the interphase refers to the phases of the cell cycle that occur between one mitosis and the next, and includes G1, S, and G2. Thus, the phases are:
* '''G1 phase''': the cell grows in size and its contents are replicated.
* '''S phase''': the cell replicates each of the 46 chromosomes.
* '''G2 phase''': in preparation for cell division, new organelles and proteins form.
* '''M phase''': cytokinesis occurs, resulting in two identical daughter cells.
* '''G0 phase''': the two cells enter a resting stage where they do their job without actively preparing to divide.<ref>{{Cite web|title=The Cell Cycle - Phases - Mitosis - Regulation|url=https://teachmephysiology.com/biochemistry/cell-growth-death/cell-cycle/|access-date=2021-10-07|website=TeachMePhysiology}}</ref>