Question

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? 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?

Both 32P and 35S were associated with the phage particles.

Both 32P and 35S were associated with the bacterial cells.

The 32P was associated with the culture medium and 35S was associated with the phage particles.

The 32P was associated with the culture medium and 35S was associated with the bacterial cells.

The 32P was associated with the bacterial cells and 35S was associated with the phage particles.

Answer 1

Answer:

The 32P was associated with the bacterial cells and 35S was associated with the phage particles.

Explanation:

The Hershey and Chase experiment determined that DNA is the genetic material and Protein isn't.

First Protein coats of bacteriophages were radiolabelled (³⁵S) and they were introduced to bacteria. But it was observed that infection of radioactive bacteriophage to bacteria didn't result in any radioactivity and thus ³⁵S was associated with the phage particles.

Then DNA of bacteriophages was radiolabelled (³²P) and they were introduced to bacteria. It was observed that infection of radioactive bacteriophage to bacteria result in radioactivity and thus ³²P was associated with the bacterial cells.

This experiment demonstrated that DNA, was the genetic material because DNA was transferred to the bacteria and Protein isn't as it was not transferred to bacteria.