When Hershey and Chase labeled viruses with radioactive phosphorus, they concluded that the virus injects DNA and not protein into its host because ____.
A) most of the radioactive protein was inside the bacteria
B) most of the radioactive DNA, but little protein ,was inside the bacteria
C) both radioactive DNA and protein were inside the bacteria
D) neither radioactive DNA nor protein was inside the bacteria
E) entire viruses were inside the bacteria

Question

Quizplus · Accepted Answer

Hershey and Chase used radioactive phosphorus to label DNA and radioactive sulfur to label proteins in viruses. They found that after the viruses infected bacteria, the radioactive phosphorus (DNA) was inside the bacteria, while the radioactive sulfur (protein) was not, leading to the conclusion that DNA is the genetic material injected by viruses into their host cells.

When Hershey and Chase Labeled Viruses with Radioactive Phosphorus, They