What Is the Purpose of the 3'- To- 5' Exonuclease

question 18

Multiple Choice

What is the purpose of the 3'- to- 5' exonuclease activity of DNA Polymerase?

• A) Removing mismatched nucleotides at the polymerase active site increases the rate of synthesis in the 5' to 3' direction.
• B) Degrade excessive nucleotides on Okazaki fragments.
• C) Remove mismatched nucleotides in the template strand.
• D) Some polymerases do not have exonuclease activity.
• E) Remove mismatched nucleotides in the newly synthesized strand.

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