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
(D) and (E) only
(A) and (B) only
(A) and (C) only
(B) and (D) only
Hershey and Chase grew viruses on mediums containing either radioactive phosphorus or radioactive sulfur. Viruses grown in the presence of radioactive phosphorus contained radioactive DNA (but not protein) because DNA contains phosphorus. Viruses grown on radioactive sulfur contained radioactive protein (but not DNA) because DNA does not contain sulfur , . Therefore, statements A and B are correct.
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