Question

Lac operon consists of

• A. One inhibitor, one operator, $2$ structural gene
• B. One inhibitor, one operator, $5$ structural gene
• C. One inhibitor, one operator, $3$ structural gene
• D. One inhibitor, one operator, $1$ structural gene

Answer 1

Answer: (C)

Lac operon consists of one inhibitor or regulator which produces the repressor protein to control operator, one operator, and three polycistronic structural genes.