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Which of the following enzymes catalyze the removal of nucleotides from the ends of DNA?
a. endonuclease
b. exonuclease
c. DNA ligase
d. Hind – II
Answers (1)
The answer is the option (b) exonuclease
Explanation: These are of two kinds; exonucleases and endonucleases. Exonucleases remove nucleotides from the ends of the DNA whereas endonucleases make cuts at Specific positions within the DNA. DNA ligase facilitates joining of sticky ends of DNA fragments. Hind-II is a type of endonuclease.
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