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An enzyme catalysing the removal of nucl...

An enzyme catalysing the removal of nucleotides from the ends of DNA is

A

a) endonuclease

B

b) exonuclease

C

c) DNA ligase

D

d) Hind ll

Text Solution

Verified by Experts

The correct Answer is:
B
Exonucleases remove nucleotides from the terminal ends (either 5' or 3') of DNA of one strand of duplex. Endonucleases make cut at specific position within the DNA. DNA lagases are known as joining or sealing enzymes. Ligases form phosphodiester bonds between adjacent nucleosides and covalently link two individual fragments of DNA. Hind ll is restriction endonuclease. It cuts the DNA and produces blunt ends.
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