In an inducible operon, the genes are
usually not expressed unless a signal turns them ”on”.
usuallyexpressed unless a signal turns them “off”.
never expressed
always expresser.
Write short note on lac operon
All of the following are part of an operon except
Select the two correct statements out of the four $(i-iv)$ 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 z-gene codes for permease.
$iv.$ This was elucidated by Francois Jacob and Jacque Monod.
In Operon concept, regulator gene functions as