Excision repair corrects DNA by
A)removing a double-stranded fragment of damaged DNA.
B)detecting, removing, and replacing damaged or incorrect nucleotides in a single strand of DNA.
C)excising the incorrect base from a nucleotide
D)removing extraneous groups such as methyl or oxygen added by mutagens.
E)correcting A=T to C=G transitions.

Question

Quizplus · Accepted Answer

Excision repair involves detecting, removing, and replacing damaged or incorrect nucleotides in a single strand of DNA. This process corrects errors that may have occurred during DNA replication or that were caused by mutagens. The other options describe other types of DNA repair mechanisms.

Excision Repair Corrects DNA by