BiomoleculesHard

Question

restriction endonucleases are enzymes which

Options

A.make cut at specific position within the DNA molecules
B.recognize a specific nucleotide sequence for binding of DNA ligase
C.restrict the action of the enzymes DNA polymerase
D. remove nucleotides from the ends of the DNA molecules

Solution

Restriction endonuclease recognizes a specific DNA base sequence (recogntion sequence or recogntion site , restriction sequence or restriction site) and cleave both the strands of DNA at or near that site. the enzyme cuts the DNA, generating restriction fragments with overhanging ends or bluntends.

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