Pathology All India exam 1db5d03a "Proofreading" is the role of A DNA primase B DNA Polymerase C Exonuclease I D Restriction endonuclease High-Yield Explanation "Polymerase II (pol II) is mostly involved in proofreading and DNA repair. Polymerase I (pol I) completes chain synthesis between Okazaki fragments on the lagging strand.