What Is the Function of the 5'->3' Exonuclease Activity of DNA

question 46

Multiple Choice

What is the function of the 5'->3' exonuclease activity of DNA polymerase I?

• A)It removes mismatched nucleotides that have been incorporated by mistake.
• B)It replaces mismatched nucleotides with the correctly matched nucleotides.
• C)It removes the DNA primer laid down by the primase at the 5' end of the Okazaki fragment.
• D)It removes the RNA primer laid down by the primase at the 5' end of the Okazaki fragment.
• E)It nicks DNA to create a primer in the middle of a DNA chain.