Proofreading activity to maintain the fidelity of DNA synthesis
A. occurs after the synthesis has been completed
B. is a function of the 3′-5′ exonuclease activity of the DNA polymerases
C. requires the presence of an enzyme separate from the DNA polymerases
D. occurs in prokaryotes but not eukaryotes
Answer:B
Proofreading activity to maintain the fidelity of DNA synthesis
A. occurs after the synthesis has been completed B. is a function of the 3′-5′ exonuclease activity of the DNA polymerases C. requires the presence of an enzyme separate from the DNA polymerases D. occurs in prokaryotes but not eukaryotes