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 ?

In chromosomes, the material controlling heredity is

Describe Hershey – Chase experiment or How it was proved the DNA is genetic material ?
 

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 $RNA$

Explain the role of scientist :

$1.$ Francis Crick

$2.$ Friedrich griphith $(1928)$