What are the four main phases of the cell cycle?
The four main phases of the cell cycle are G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). During the G1 phase, the cell grows and carries out normal functions. In the S phase, DNA replication occurs, resulting in duplicate copies of the genetic material. The G2 phase is a period of further growth and preparation for cell division. Lastly, during the M phase, the cell undergoes mitosis, which includes the division of the nucleus (karyokinesis) and then the division of the cytoplasm (cytokinesis) to produce two daughter cells. These four phases are tightly regulated to ensure the proper division and growth of cells.
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