With reference to Hershey and Chase experiments. Select the correct statements.
(A) Viruses grown in the presence of radioactive phosphorus contained radioactive DNA.
(B) Viruses grown on radioactive sulphur contained radioactive proteins.
(C) Viruses grown on radioactive phosphorus contained radioactive protein.
(D) Viruses grown on radioactive sulphur contained radioactive DNA.
(E) Viruses grown on radioactive protein contained radioactive DNA.
Choose the most appropriate answer from the options given below :

The correct statements are A and B only and C, D, E are incorrect.
A. In the experiments, viruses grown in the presence of radioactive phosphorus (which is incorporated into DNA) contained radioactive DNA. This supported the conclusion that DNA is the genetic material.
B. Viruses grown on radioactive sulphur (which is incorporated into proteins) contained radioactive proteins.
C. Viruses grown on radioactive phosphorus do not contain radioactive protein. Proteins do not contain phosphorous.
D. Viruses grown on radioactive sulphur do not contain radioactive DNA as DNA do not contain sulphur.

E. Viruses grown on radioactive protein will not contain radioactive DNA. There is no relation between type of protein and DNA content in a virus.