Question:medium

A bacterial cell exposed to UV radiation shows an increased rate of C-T transitions at specific sites. Later analysis reveals that the same replication fork also accumulated short DNA stretches synthesized by DNA Pol-I. Which DNA repair pathway was most likely activated?

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UV-induced bulky DNA lesions such as pyrimidine dimers are mainly repaired by nucleotide excision repair.

Updated On: May 18, 2026

Photoreactivation
Base excision repair
Nucleotide excision repair
Mismatch repair

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The Correct Option is C

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