KEY TAKEAWAYS •
The cell cycle happens in nearly every cell at all times.
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The cells that divide go through a G1, S, G2, and M phase.
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Cellular DNA divides during the S phase but doesn’t get divided into daughter cells until the M phase.
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There are multiple regulators to the cell cycle that tell the cell whether it should go through to the next phase. There are different regulator cells for each part of the cell cycle.
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Meiosis involves a multi-step process in which the diploid cell makes unique haploid sex cells.
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Apoptosis is different from necrosis. It is an orderly dismantling of a cell that ultimately gets phagocytized by the immune system.
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Failure of apoptosis when it should occur leads to cancer in many cases.
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