Which enzyme/s will be produced in a cell in which there is a nonsense mutation in the lac \gamma gene?

  • Option 1)

    Lactose permease and transacetylase

  • Option 2)

    \beta-galactosidase

  • Option 3)

    Lactose permease

  • Option 4)

    Transacetylase

 

Answers (1)

As we discussed in concepts

Z gene code -

The Z gene code for Beta-galactosidase (\beta-gal), which is primarily responsible for the hydrolysis of the disaccharide, lactose, into its mono metric units, galactose and glucose. 

-

 

 and

The y-gene -

The y-gene code for permease which increases permeability of the cell to β - galactosides.

-

 

 


Option 1)

Lactose permease and transacetylase

This option is incorrect.

Option 2)

\beta-galactosidase

This option is correct.

Option 3)

Lactose permease

This option is incorrect.

Option 4)

Transacetylase

This option is incorrect.

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