Question

Select the WRONG statement from the following with reference to lac operon.

Options

• It is a unit of gene expression and regulation for lactose sugar metabolism in E. coli.

• Lactose sugar enters the cell due to the activity of enzyme permease.

• Operators are present between promoters and structural genes.

• The structural gene 'z' codes for p - galactosidase, 'y' for transacetylase and 'a' for permease.

Answer 1

The structural gene 'z' codes for p - galactosidase, 'y' for transacetylase and 'a' for permease.

Explanation:

lac z → β-galactosidase
lac y → Permease
lac a → Transacetylase