Which of the following is false for $RNA$?
$(i)$ $RNA$ can directly code for the synthesis of proteins
$(ii)$ It is very common process to synthesis $DNA$ from $RNA$
$(iii)$ $RNA$ is used as genetic material only in human
$(iv)$ One polynucleotide chain is present in $RNA$
$i, ii$
$i, iv$
$ii, iii$
$iii, iv$
Recall the experiments done by Frederick Griffith, Avery, MacLeod and McCarty, where $DNA$ was speculated to be the genetic material. If $RNA$, instead of $DNA$ was the genetic material, would the heat killed strain of Pneumococcus have transformed the $R\,-$ strain into virulent strain ? Explain.
Unequivocal proof that DNA is the genetic material was first proposed by
Name any three viruses which have $RNA$ as the genetic material.
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 ?
Who proved that $DNA$ is basic genetic material?