Question

The lac operon consists of ____ structural genes.

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

Answer:

C. 3

• The lac operon is an inducible operon that consists of 3 tandem structural genes namely the z gene, y gene and the gene; encoding the β-galactosidase, galactoside permease and thiogalactoside transacetylase respectively.