Which of the following does not act as an inducer in the $lac$ operon?

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

Lac operon is:

Which statement is correct for homeotic genes?

Jacob and Monod studied lactose metabolism in $E. coli$ and proposed the operon concept. The operon concept is applicable to:

Select two correct statements from the four $(a-d)$ given below regarding the $lac$ operon.
$(A)$ Glucose or galactose may bind with the repressor gene and induce inactivity.
$(B)$ In the absence of lactose,the repressor binds with the operator region.
$(C)$ The $z$-gene codes for permease.
$(D)$ This was elucidated by Francois Jacob and Jacques Monod.
Which of the following are the correct statements?