An exonuclease is an enzyme that can

A. remove a terminal nucleotide in a polynucleotide chain.
B. connect two fragments of DNA together.
C. cut DNA at a site?specific sequence.
D. catalyze DNA synthesis.
E. produce an RNA primer for DNA synthesis.


Ans: A. remove a terminal nucleotide in a polynucleotide chain.

Biology & Microbiology

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