Answer:
2. DNA polymerase II, DNA polymerase B
Explanation:
DNA polymerase II (also known as DNA Pol II or Pol II) is a prokaryotic DNA-Dependent DNA polymerase encoded by the PolB gene. DNA Polymerase II is an 89.9-kDa protein and is a member of the B family of DNA polymerases. The enzyme has 5′→3′ DNA synthesis capability as well as 3′→5′ exonuclease proofreading activity.
It was first isolated by Thomas Kornberg in 1970
