Question

Lac operon consists of ______.

Options

• One regulator and one structural gene.

• Only two regulator genes.

• Two regulator gene and two structural genes.

• One regulator gene and three structural genes.

Answer 1

Lac operon consists of one regulator gene and three structural genes.

Explanation:-

Lac Operon is made up of three structural genes, Z, Y, and A, as well as one regulator gene, I. The lac Operon is repressed by the I gene. Beta-galactosidase is encoded by the Z gene, permease by the Y gene, and transacetylase by the A gene.