Cellular proliferation occurs as a result of two events, duplication of DNA within the cells and mitosis. ... Division involves proteins; some tell the cell when to divide, known as proto-oncogenes and some are responsible for making sure DNA is copied accurately. During this cell cycle there are checkpoints that ensure all replication is done accurately and any damage to the DNA is repaired before division occurs. ... Damage to the DNA repair genes mean any damage will remain, and defects to the tumour suppressor genes means that any damaged cell will survive and continue to divide. ... This ...

• Word Count: 3220
• Approx Pages: 13
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• Grade Level: Undergraduate