A) Jacob and Monod
B) McClintock
C) Meselson and Stahl
D) Beadle and Tatum
Correct Answer: D
Solution :
G.W. Beadle and E. L. Tatum proposed a concept called one gene one enzyme hypothesis on the basis of biochemical mutations in Neurospora. Jacob and Monod demonstrated that gene expression is controlled by regulatory genes and proposed Lac operon model for E. coli. McClintock Barbara discovered jumping genes or transposones in maize. Meselson and Stahl demonstrate that DNA replication is semiconservative.
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