Question

The diagram of the lac operon from E. Coli is shown below. Each letter indicates its components may be used more than once.

Which of the following option is correct in respect of the letters and their functions –

• A. C – the binding site for the repressor protein, B – the binding site for RNA polymerase, D – the structural genes, A – the gene that codes for the repressor protein.
• B. A – the binding site for the repressor protein, B – the binding site for polymerase, C – the structural genes, D – the gene that codes for the repressor protein.
• C. A – the binding site for the repressor protein, D – the binding site for RNA polymerase, B – the structural genes, C – the gene that codes for the repressor protein.
• D. D – the binding site for the repressor protein, C – the binding site for RNA polymerase, B – the structural genes, A – the gene that codes for the repressor protein.

Answer 1

Answer: (A)

C – the binding site for the repressor protein, B – the binding site for RNA polymerase, D – the structural genes, A – the gene that codes for the repressor protein.