The $lac$ operon is a part of which of the following?

$A$: $Lac$ operon exerts negative control only.
$R$: The operator is occupied by aporepressor during regulation.

Select two statements out of the four given statements $(i-iv)$ with respect to the $lac$ operon.
$(i)$ Glucose or galactose binds with the repressor and inactivates it.
$(ii)$ In the absence of lactose,the repressor binds with the operator.
$(iii)$ The $Z$-gene codes for permease.
$(iv)$ It was elucidated by Francois Jacob and Jacques Monod.

Select the $correct$ match:

Which of the following is not a component of the $Operon$ model?

Match the following genes of the $Lac$ operon with their respective products.

$(a)\; i$ gene	$(i)\; \beta-\text{galactosidase}$
$(b)\; z$ gene	$(ii)\; \text{Permease}$
$(c)\; a$ gene	$(iii)\; \text{Repressor}$
$(d)\; y$ gene	$(iv)\; \text{Transacetylase}$

Select the correct option.