Transformation was discovered by

$RNA$ acts as the genetic material in:

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

In bacteriophage culture,which of the following occurs?

The scientists involved in the discovery of $DNA$ as the chemical basis of heredity were:

$A$ bacterium grown on a medium containing radioactive Sulphur incorporates the radioactivity into: