Solution:
The z gene codes for beta-galactosidase.
The y gene codes for permease.
The a gene codes a transacetylase.
The i gene codes for repressor of the lac operon.
In lac operon, information for β-galactosidase formation is present in the gene
The z gene codes for beta-galactosidase.
The y gene codes for permease.
The a gene codes a transacetylase.
The i gene codes for repressor of the lac operon.