Question

In regulation of gene expression in prokaryotes
I. Lactose acts as a suppressor for the gene expression.
II. Tryptophan acts as an inducer for the gene expression.
III. Regulatory gene is the one that produces the repressor molecule.
Choose the correct options.

• A. Only I
• B. Only II
• C. Only III
• D. II and I

Answer 1

The correct option is C Only III

Lactose is inducer of gene expression. Tryptophan is the suppressor for the gene expression.