hey I think dat this lesson tells u about restriction endonuclease only and not about restriction enzymes. I think dat restriction endonuclease is one of the two restriction enzymes in which the other one adds methyl group to DNA. please check it and if neccesary do the appropriate changes.


Dear Student,

Your question is not clear, The term restriction enzyme refers to restriction endonucleases. These restriction endonucleases cut the DNA at specific locations called recognition sites. Kindly recheck your question and get back to us.


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