The lac operon consists of

The $lac \, y$ gene codes for which of the following?

The lactose present in the growth medium of bacteria is transported to the cell by the action of

Which of the following is a regulatory gene?

Identify the $INCORRECT$ statement from the following with reference to lac operon.

Which of the following statements concerning the regulatory gene $(i)$,associated with the $lac$ operon are incorrect?
$(I.)$ $\text{mRNA}$ is transcribed from the $i$ gene whether lactose is present or not.
$(II.)$ $\text{mRNA}$ is transcribed from the $i$ gene only when the lactose is present.
$(III.)$ $\text{mRNA}$ is transcribed from the $i$ gene only when the lactose is not present.
$(IV.)$ Lactose inhibits the translation of $i$ gene $\text{mRNA}$.