Multiple Choice
Which DNA repair system is primarily responsible for correcting mismatches that occur during DNA replication?
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17. Mutation, Repair, and Recombination
DNA Repair
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In DNA replication, which mechanism primarily helps prevent errors by removing misincorporated nucleotides during DNA synthesis?
A
3′→5′ exonuclease proofreading activity of DNA polymerase
B
5′→3′ exonuclease activity that removes RNA primers
C
Photoreactivation by DNA photolyase to reverse thymine dimers
D
Nucleotide excision repair that removes bulky lesions after replication
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