Multiple choice

Who of the following is associated with the discovery of 'Restriction endonuclease'?

  1. Hamilton Smith

  2. H.G. Khorana

  3. Marshal Nirenberg

  4. S. B. Weiss

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A Correct answer
Explanation

Hamilton Smith (along with Daniel Nathans and Werner Arber) discovered restriction endonucleases in the late 1960s, for which they shared the 1978 Nobel Prize in Physiology or Medicine. Smith isolated the first restriction enzyme HindII from Haemophilus influenzae.