Which scientist discovered $DNA$?

Which of the following molecules was the subject of debate regarding the genetic material?

Select the incorrect statement.

You are repeating the Hershey-Chase experiment and are provided with two isotopes: $^{32}P$ and $^{15}N$ (in place of $^{35}S$ in the original experiment). How do you expect your results to be different?

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

The Hershey and Chase experiment is given below. What are the processes $P, Q,$ and $R$?
$\quad\quad \quad P \quad\quad\quad Q \quad \quad\quad R$