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DNA Repair Mechanisms

16. Microbial Genetics / DNA Repair Mechanisms / Problem 4

During the base excision repair process, after the damaged base is removed, what is the next step?

A

DNA ligase seals the strand

B

DNA polymerase fills in the gap with the correct nucleotide

C

An endonuclease cuts the DNA backbone at the site

D

A phosphodiesterase removes the sugar-phosphate residue

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