When $Escherichia$ $coli$ cells are cultured in a medium where $Lactose$ is absent,the $i$ gene of $Lac$ $Operon$ continues to produce repressor $mRNA$,because it is:

How is gene expression regulated in eukaryotes?

Select the two correct statements out of the four $(i-iv)$ statements given below about the lac operon.
$(i)$ Glucose or galactose may bind with the repressor and inactivate it.
$(ii)$ In the absence of lactose,the repressor binds with the operator region.
$(iii)$ The $z$-gene codes for permease.
$(iv)$ This was elucidated by Francois Jacob and Jacques Monod.
The correct statements are:

Which of the following acts as an inducer for the $lac$ operon in $Escherichia$ $coli$?

In $Escherichia \ coli$,$lac$ operon is induced by

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