A) methylase
B) endonuclease
C) ligases
D) exonucleases
Correct Answer: B
Solution :
Endonucleases are enzymes that cleave the phosphodiester bond within a polynucleotide chain. Some, such as deoxyribonuclease-I, cut DNA relatively non-specifically (without regard to sequence), while many, typically called restriction endonuclease or restriction enzyme, cleave only at very specific nucleotide sequences.
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