Which gene in the lac operon is responsible for the hydrolysis of lactose into its monomeric units?

Which gene in the lac operon is responsible for the hydrolysis of lactose into its monomeric units?
  1. The i gene
  2. The z gene
  3. The y gene
  4. The a gene

Solution

The z gene codes for beta-galactosidase, which is responsible for the hydrolysis of lactose into its monomeric units.

Asked in: NCERT

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