The unequivocal proof that $DNA$ is the genetic material 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

Frederick Griffith performed a series of experiments on which of the following organisms?

Following representations $P$,$Q$ and $R$ denote few steps of the Griffith Experiment. Identify the correct one$(s)$:
$P. R$ strain $\rightarrow$ Inject into mice $\rightarrow$ Mice die
$Q. S$ strain (Heat killed) $\rightarrow$ Inject into mice $\rightarrow$ Mice die
$R. R$ strain $\rightarrow$ Inject into mice $\rightarrow$ Mice live

Heavy $\text{DNA}$ can be differentiated from normal $\text{DNA}$ by which centrifugation technique?

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