Question

Using radioactive tracers to determine the interactions of bacteriophages and their host bacteria, Hershey and Chase demonstrated without question that

Select one:
a. DNA and proteins are actually the same molecules located in different parts of cells.
b. genes are composed of protein molecules.
c. bacteria inject their DNA into the cytoplasm of bacteriophages.
d. DNA is the molecule that stores genetic information in cells.

Answer 1

Hershey and Chase demonstrated that DNA is the molecule that stores genetic information in cells using radioactive tracers in their experiment.

Step-by-step explanation:

In their experiment, Hershey and Chase used radioactive tracers to determine the interactions of bacteriophages and their host bacteria.

They labeled one batch of phage with radioactive sulfur, 35S, to label the protein coat, and another batch with radioactive phosphorus, 32P, to label the DNA. After infecting the cells and separating the phage coats from the bacterial cells, they found that only the DNA labeled with 32P entered the bacterial cells.

Therefore, Hershey and Chase demonstrated that DNA is the molecule that stores genetic information in cells.