Which of the following is incorrect for the Hershey-Chase experiment?

Select the correct option for the $R$ strain of bacteria.

$DNA$ is the genetic material. The final proof for this came from the experiments of:

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

In $1920$,nucleic acid was identified as a major component of which of the following?

How many of the following organisms have $RNA$ as their genetic material?
$TMV$,Humans,Bacteria,$Q\beta$ bacteriophage,Bacteriophage $\lambda$,Yeast,Maize,$\phi \times 174$ bacteriophage,Retroviruses.