Bacteriophage
According to my bio book, I think it's Alfred Hershey and Martha Chase, in the HERSHEY-CHASE experiment.
Hershey and Chase
DNA controls heredity, not proteins.
Hershey and Chase chose to use viruses in their experiments because viruses are simple and can easily infect and replicate within host cells, making them ideal for studying the process of genetic material transfer.
Griffith, Avery, Hershey, and Chase
Markers :)
Hershey and Chase used radioactive sulfur-35 to tag phage proteins and radioactive phosphorus-32 to tag phage DNA in their experiments on bacteriophages.
Bacteriophage
Alfred Hershey and Martha Chase conducted the famous Hershey-Chase experiment in 1952, which confirmed that DNA, not protein, is the genetic material in bacteriophages. They used radioactive labeling to trace the genetic material within the bacteriophages, providing evidence for the role of DNA in heredity.
The genetic mateial is made of DNA and not of proteins
Markers-Nova Net
Hershey and Chase observed that DNA is the identity of the hereditary material in phage T2. Hershey and Chase used radioactive labels to mark the protein of the bacteriaphage in one experiment and the DNA in another.