The given figure represents the experiment of which scientists?

$RNA$ acts as the genetic material in:

In order to label the coat alone but not the nucleic acid,the bacteriophage should be grown on $E. coli$ cells previously cultured on a medium containing

The unequivocal proof that $DNA$ is the genetic material came from the experiments of Hershey and Chase. They worked on which of the following?

If the transforming principle is transferred to the $R$-strain,what characteristics will the $R$-strain acquire?
$(i)$ Formation of a smooth polysaccharide coat
$(ii)$ Becomes non-virulent
$(iii)$ Becomes virulent
$(iv)$ Does not form a smooth polysaccharide coat

The term 'Nuclein' for the genetic material was used by: