Question

Base 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

Answer 1

Answer:

Option C

Explanation:

Base excision repair involves, the detection, removal and replacement of incorrect base in a nucleotide on one strand while using the other undamaged strand as template for the correction. It involves the DNA glycosylases that aids in detection. Repair can be done in two pathways: long patch panther

Short patch panther

It corrects base lesions that arise due to alkylation, depurination/depyrimidation, deamination etc