In the Operon concept,the regulator gene functions as:

The equivalent of a structural gene is

Why can glucose and galactose not act as inducers for the $lac$ operon?

Provide definitions/explanations for the following terms: Splicing and Operator gene.

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:

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