A) are synthesised by bacteria as part of their defense mechanism
B) are used for in vitro DNA synthesis
C) are used in genetic engineering for ligation of two DNA molecules
D) are present in mammalian cells for degradation of DNA when the cell dies
Correct Answer: A
Solution :
Restriction endonucleases are found in bacteria and Archaea. These provide defense mechanisms to bacteria against invading viruses. Inside a prokaryote, the restriction enzymes selectively cut up foreign DNA in a process called restriction,
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