A-LevelBiologyThe mitotic cell cycle9700/12 · Feb/Mar 2022 · Q201 Mark

The protein p53 is produced in a cell in response to DNA damage. This protein stops the cell cycle for a short time just before the DNA is replicated, so that the DNA can be repaired. At which phase of the cell cycle will this stop occur?

BG1

DG2

✓ Correct answer

B: G1

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Topic: The mitotic cell cycle, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2022 Paper 1 Variant 2, question 20.

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