The differentiation of organs and tissues in a developing organism is associated with which of the following?

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

The activity of structural genes is controlled by.....

Explain the contribution of the scientists: François Jacob and Jacques Monod.

In the $Lac$ operon,to which component does the inducer bind to switch the system 'on'?

Given below are two statements:
Statement $I$: In lac operon,the repressor protein binds to the promoter region of the operon and prevents $\text{RNA}$ polymerase from transcribing the operon.
Statement $II$: Regulation of lac operon can also be visualized as regulation of enzyme synthesis by its substrate.
In the light of the above statements,choose the correct answer from the options given below: