Question

When a mutation occurs during DNA replication, ______ replaces the incorrect nucleotide with the correct one after the mismatched nucleotide has been removed.

Answer 1

Mismatch repair corrects errors after DNA replication is completed by removing the incorrectly added nucleotide and replacing it with the correct base.

Step-by-step explanation:

Mismatch repair corrects errors after DNA replication is completed by excising the incorrectly added nucleotide and adding the correct base. The process involves specific repair enzymes that recognize the mispaired nucleotide and remove the part of the strand that contains it. The gap created is then filled in with the correctly paired base by DNA polymerase and ligase.