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Question

Lac operon concept was proposed by
  1. Jacob and Monod in 1969
  2. Jacob and Monod in 1961
  3. Watson and Crick in 1953
  4. Watson and Crick in 1963

A
Jacob and Monod in 1961
B
Watson and Crick in 1953
C
Jacob and Monod in 1969
D
Watson and Crick in 1963
Solution
Verified by Toppr

Jacob and Monod, 1961, proposed operon model to explain induction and suppression of enzyme synthesis based on their studies on inducible system for synthesis of β-galactosidase enzyme in E. coli. Watson and Crick worked on molecular structure of DNA, not on operon; which makes options C and D wrong.

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