A) cuts the DNA molecule randomly
B) cuts the DNA molecule at specific sites
C) restricts the synthesis of DNA inside the nucleus
D) synthesises DNA
Correct Answer: B
Solution :
Restriction endonuclease is a type of enzyme that can cleave molecules of DNA at a particular site called restriction site having palindromic sequence. These enzymes are produced by many bacteria and protect the cell by cleaving and destroying the DNA of invading viruses. Now-a-days, restriction enzymes are widely used in the techniques of genetic engineering.
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