Question

Match the following genes of the Lac operon with their respective products :
(a) i gene (i) β-galactosidase
(b) z gene (ii) Permease
(c) a gene (iii) Repressor
(d) y gene (iv) Transacetylase

Select the correct option.
(a) (b) (c) (d)
(1) (i) (iii) (ii) (iv)
(2) (iii) (i) (ii) (iv)
(3) (iii) (i) (iv) (ii)
(4) (iii) (iv) (i) (ii)

Answer 1

Explanation:

(3) (iii) (i) (iv) (ii)

Answer 2

The correct option is option 3.

• i gene codes for repressor.
• z gene codes for β- galactosidase
• a gene codes for transacetylase
• y gene codes for permease.

• The lac operon or lactose operon is an operon system required for the transport and metabolism of lactose.

• This metabolic system mainly seen in bacteria e.g., E. Coli.

• Glucose is the preferred carbon source.

• The lac operon also allows for the effective digestion of lactose when glucose is not present in the medium of culture.