Answer:
Bacteriophage virus.
Explanation:
Hershey and Chase relied on bacteriophage, which is a virus that affects and replicates within bacteria and archaea. This virus is composed of DNA and proteins. Hershey and Chase showed that the DNA is the hereditary material due to the fact that they prove that when a virus infects a bacteria what enters inside of it is the DNA (that will affects the bacteria's DNA) and not the protein.
