Question

Scientists have reported that more than 95% of the factors that lead to some types of cancers are caused by random DNA-copying errors. During which phased of the cell cycle do these DNA-copying errors most likely occur?

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M phase

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G2 phase

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G1 phase

Select {responseValue}
S phase

Answer 1

S phase

DNA replication (DNA copying) occurs during the S (synthesis) phase, so replication errors are most likely to arise then.