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

Multiple Choice

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

A) removes a mismatched nucleotide
B) excises a segment of DNA around the mismatched base
C) can recognize which strand is the template or parent strand and which is the new strand of DNA.
D) adds nucleotide triphosphates to the 3' end of the growing DNA strand