molecules Cell Cycle Phases and Checkpoints The cell cycle is a set of steps cells go through to grow, replicate, divide, and start the process again. The cell cycle is a series of events that cells go through to grow, replicate their DNA , and divide. This process is vital for the growth, development, repair, and maintenance of living organisms. A consistent and regulated progression through the cell cycle ensures the proper duplication and distribution of a cell’s genetic material. Overview of the Cell Cycle Phases The two broad phases of the cell cycle are interphase and mitosis . During interphase, cells grow, replicate their DNA and organelles , and prepare for division. Interphase steps are the first gap phase (G 1 ), the synthesis phase (S), and the second gap phase (G 2 ). Cells divide during mitosis (M). The final step of mitosis, or the following step (depending on your source) is cytokinesis. Cytokinesis is the division of the cell’s cytoplasm, w...
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