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  4. Restriction enzyme was discovered by :

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Q. Restriction enzyme was discovered by :

Haryana PMTHaryana PMT 2002

Solution:

A restriction enzyme (or restriction endonuclease) is an enzyme that cuts DNA at or near specific recognition nucleotide sequences known as restriction sites. Werner Arber, Hamilton Smith, and Daniel Nathans received the 1978 Nobel Prize in Physiology or Medicine for developing the smaller names for the restriction enzymes. They performed experiments proving that there are certain enzymes produced by the bacteria which help in the cleavage of the genomes of the pathogens.