Mutations are Usually Rare,because

Question

Mutations are usually rare,because
A) Okazaki fragments are removed, whenever detected by the ligase enzyme.
B) transcription, after replication, will normally detect and fix mutations.
C) ligases serve to conduct "quality control" checks in order to repair mutations.
D) DNA polymerase quickly discards mismatched nucleotide base pairs.
E) Both answer options, regarding the role of the ligase enzyme, are correct.

Accepted Answer

DNA polymerase has a proofreading ability, allowing it to quickly recognize and remove mismatched nucleotide base pairs during DNA replication. This mechanism helps to prevent the occurrence of mutations. Therefore, mutations are usually rare.