試題詳解

4. Which of the following about DNA polymerase I (pol I) is incorrect?
(A) Pol I is the polymerase responsible for replicating the bacterial genome.
(B) Pol I has three activities: DNA polymerase, 5'→ 3' exonuclease, and 3' → 5' exonuclease.
(C) The Klenow fragment does not have 5'→ 3' exonuclease activity.
(D) Pol I plays a dominant role in repair of DNA damage.
(E) pol I can be cleaved by mild proteolytic treatment into to a large fragment and a small fragment.