In the $lac$ operon concept of gene expression,allolactose acts as:

Which of the following is not produced by $E. coli$ in the lactose 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 $\text{mRNA}$.

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

Given below is the representation of the $lac$ operon of $E. coli$. Identify $I$ and $II$ from the options given below.

$I$

Promoter

$II$

$Z$

$Y$

$A$

Identify the $INCORRECT$ statement with reference to the regulation of gene expression.