Study the schematic representation of the genes involved in the lac operon given below and answer the questions that follow.
(i) Identify and name the regulatory gene in this operon. Explain its role in ‘switching off the operon.
(ii) Why is lac operon’s regulation referred to as negative regulation?
(iii) Name the inducer molecule and the products of the genes V and of the operon. Write the function of these gene products.