Select the two correct statements out of the four $(i -iv)$ statements given below about 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 z­gene codes for permease.

$(iv)$ This was elucidated by Francois Jacob and Jacques Monod.

The correct statements are

Who was awarded Nobel Prize for synthesis of $RNA$ in $1959$

Episome is a

What is transfer of $DNA → RNA$ called

Geneticist plot the relative locations of genes on chromosomes by which of these methods