Bacteriophage nucleic acids were labelled as In Hershey and Chase experiment, the nucleic acid of bacteriophage was labelled as

The unequivocal proof that DNA is the genetic material came from the experiments of Alfred Hershey and Martha Chase (1952). They grew some viruses on a medium that contained radioactive phosphorus(³²P) and some others on medium that contained radioactive sulfur(³⁵S). Phosphorous is a component of nucleic acids , so nucleic acids were labelled as ³²P.