In the Hershey- Chase experiment, bacteriophages were produced in either ³²P- containing or ³⁵S- containing medium. Where were these isotopes eventually detected when the radioactively- labeled bacteriophages were introduced to a fresh bacterial culture? A) The ³²P was associated with the culture medium and ³⁵S was associated with the phage particles. B) Both ³²P and ³⁵S were associated with the bacterial cells. C) The ³²P was associated with the culture medium and ³⁵S was associated with the bacterial cells. D) Both ³²P and ³⁵S were associated with the phage particles. E) The³²P was associated with the bacterial cells and ³⁵S was associated with the phage particles.

Question

Quizplus · Accepted Answer

The Hershey-Chase experiment demonstrated that DNA is the genetic material. ³²P labels DNA, which was found inside the bacterial cells, indicating that DNA entered the cells. ³⁵S labels protein, which remained with the phage particles outside the cells.

In the Hershey- Chase Experiment, Bacteriophages Were Produced in Either