Question

In operon concept, regulator gene produces

• A. Repressor
• B. Inducer
• C. Allolactose
• D. All of the above

Answer 1

Answer: (A)

Repressor

Operon model has an operator, regulator, and inducer, the regulator produces the repressor protein that inhibits the activity of operator gene, operator gene is a gene which binds repressor proteins thus inhibiting the translation. Lactose binds to repressor protein & prevents it is from repressing the gene transcription, it can be activated by allolactose.

So, the correct answer is "Repressor".