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NEETZoologyMolecular Basis of Inheritance

Select the incorrect statement for the given figure.

Options

  1. AE-The a gene encodes a transacetylase.
  2. BD-The y gene codes for permease, which increases permeability of the cell to β-galactosides.
  3. CC-The z gene codes for beta-galactosidase (β-gal), which is primarily responsible for the hydrolysis of the di
  4. DB-Lactose is the substrate for the enzyme beta-galactosidase and it regulates switching on and off of the oper

Correct answer

C. C-The z gene codes for beta-galactosidase (β-gal), which is primarily responsible for the hydrolysis of the di

Step-by-step solution

The i gene codes for the repressor of the lac operon. The z gene codes for beta-galactosidase (β-gal), which is primarily responsible for the hydrolysis of the disaccharide, lactose into its monomeric units, galactose and glucose. The y gene codes for permease, which increases permeability of the cell to β-galactosides. The a gene encodes a transacetylase. Hence, all the three gene products in lac operon are required for metabolism of lactose. Lactose is the substrate for the enzyme beta-galactosidase and it regula

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