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Molecular Basis of Inheritance question

2010 · Q46
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Molecular Basis of Inheritance question

2010 · Q46

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1
The lac Operon consists of -
  1. A
    Three regulatory genes and three structure genes
  2. B
    Four regulatory genes only
  3. C
    Two regulatory genes and two structural genes
  4. D
    One regulatory gene and three structural genes
View written solutionFree

Correct answer: D

Lac operon is the operon that regulates lactose metabolism in the bacterium Escherichia coli. Its form wast first postulated in 1961 by Francois Jacob and Jacques Monod to explain the control of β- galactosidase synthesis and for this work, they were awarded Nobel Prize. Lac operon system or inducible operon system consists of regulator gene (i) promoter gene (z, y and a), repressor protein and inducer.

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