In which of the following are monocistronic genes found?

Which statement is correct for homeotic genes?

What happens if an $ATT$ sequence appears in the middle of the template strand of the $Lac\, y$ gene?

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

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?

What effect would you expect if gene expression of the $lac$ operon were completely repressed?