Which enzyme activity is associated with the proofreading mechanism of DNA polymerase I?
A)5'-to-3' exonuclease activity
B)3'-to-5' exonuclease activity
C)5'-to-3' polymerase activity
D)Both A and B
E)All of these

Question

Quizplus · Accepted Answer

3'-to-5' exonuclease activity is responsible for the proofreading mechanism of DNA polymerase I, allowing the enzyme to remove incorrectly paired nucleotides during DNA replication.

Which Enzyme Activity Is Associated with the Proofreading Mechanism of DNA