AGB-0095
QUESTION
Restriction enzymes capable of making internal cuts in a DNA molecule is called?
OPTIONS
(A) S1 nuclease
(B) Restriction endonuclease
(C) Restriction exonuclease
(D) Both Restriction exonuclease and Restriction endonuclease
ANSWER
(B) Restriction endonuclease
EXPLANATION
Restriction endonucleases recognize specific nucleotide sequences and make internal cuts within DNA molecules, generating defined fragments. Exonucleases remove nucleotides from DNA ends, while S1 nuclease is a single-strand-specific nuclease and is not the general term for sequence-specific restriction cutting.