Fundamentholfundamenthol
NEET2026Biology
Q.

In the lac operon, the z gene codes for

  1. A

    permease

  2. B

    transacetylase

  3. C

    beta-galactosidase

  4. D

    the repressor of lac operon

Solution

In the lac operon, each structural gene codes for a different protein:

z gene → beta-galactosidase

y gene → permease

a gene → transacetylase

The i gene (regulator) codes for the repressor protein.

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