The lac Operon consists of -

The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join -

Select the two correct statements out of the four (a-d) statements given below about lac operon.
(a) Glucose or galactose may bind with the repressor and inactivate it
(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 Jacque Monod
The correct statements are :

The one aspect which is not a salient feature of genetic code, is its being –