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den301095 [7]
3 years ago
15

Explain how the cell cycle is normally controlled, including reference to the role of tumor-suppressor genes:

Biology
1 answer:
Aleks [24]3 years ago
7 0

The cell cycle is composed of S (synthetic) phase and M (Mitotic) phase. In between are G1 and G2 phases. cyclin-dependent kinases propel cell division. Their activation results in the progression of a cell from one phase to another while their inactivation arrests a cell in a phase. In case of damage to DNA during a cell cycle, transcription factors p53 (a renowned tumor suppressor) are recruited. P53 inhibits cyclins-dependent kinases and also induces cell apoptosis if DNA is not repaired.






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