試題詳解

2. The 5' → 3' exonuclease activity of E. coli DNA polymerase I is involved in:
(A)Sealing of nicks by ligase action
(B) Formation of Okazaki fragments
(C) Proofreading of the replication process
(D) Removal of RNA primers by nick translation
(E) Formation of a nick at the DNA replication origin