In the Hershey and Chase Experiment,how Did Labeling DNA and Protein

Multiple Choice

In the Hershey and Chase experiment,how did labeling DNA and protein with different radioactive isotopes demonstrate that DNA,rather than protein,carried the genetic information in the T2 virus?

A) Researchers could track which part of the virus entered a bacterial cell.
B) Researchers could use radio labeling to inactivate DNA and protein in the bacteria.
C) Researchers could distinguish bacterial DNA from viral protein.
D) Researchers could better elucidate DNA or protein structure.
E) Researchers could monitor how DNA interacted with protein in the virus.