The Epsilon (ε)Subunit of DNA Polymerase III of E

question 12

Multiple Choice

The epsilon (ε) subunit of DNA polymerase III of E.coli has exonuclease activity.How does it function in the proofreading process?

• A)The epsilon subunit can remove a mismatched nucleotide.
• B)The epsilon subunit excises a segment of DNA around the mismatched base.
• C)The epsilon subunit can recognize which strand is the template or parent strand,and which is the new strand of DNA.
• D)It adds nucleotide triphosphates to the 3′ end of the growing DNA strand.

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