What does the structural gene (y) of a lac operon code for?(a) β-galactosidase(b) Transacetylase(c) Permease(d) GlucagonI have been asked this question in semester exam.The above asked question is from Molecular Basis of Inheritance topic in chapter Molecular Basis of Inheritance of Biology – Class 12

What does the structural gene (y) of a lac operon code for?(a) β-gala

1.	What does the structural gene (y) of a lac operon code for?(a) β-galactosidase(b) Transacetylase(c) Permease(d) GlucagonI have been asked this question in semester exam.The above asked question is from Molecular Basis of Inheritance topic in chapter Molecular Basis of Inheritance of Biology – Class 12
Answer» Correct ANSWER is (C) Permease Explanation: The structural gene (z) of the lac operon codes for β-galactosidase. It is RESPONSIBLE for the hydrolysis of polysaccharides. The ‘y’ genes CODE for permease. It increases the permeability of a CELL to β-galactosidase. The ‘a’ genes code for transacetylase.

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