The ________ was/were labeled using the radioisotope ³²P in the Hershey-Chase experiments.
A) RNA
B) DNA
C) proteins
D) carbohydrates

Question

Quizplus · Accepted Answer

The Hershey-Chase experiments were carried out to demonstrate that DNA, rather than proteins, was responsible for carrying genetic information in viruses. They used the radioactive isotope ³²P to label the DNA and ³⁵S to label the proteins. After infecting bacteria with labeled viruses, they found that only the DNA was transferred to the host cell and replicated, thus confirming that genetic information was stored in DNA. Therefore, the correct answer is B (DNA) was labeled in the experiments.

The ________ Was/were Labeled Using the Radioisotope ³²P in the Hershey-Chase