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Describe the experiment carried out by Hershey and Chase. Write the conclusion they arrived at.

 

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Hershey and Chase Experiment:

In this experiment, they grew viruses on a medium containing radioactive phosphorus /P32, and some on radioactive sulphur / S35, radioactive DNA carried in viruses grown on radioactive phosphorus, the radioactive protein carried in virus grown in radioactive sulphur.

Radioactive phages were allowed to attach to E.coli bacteria, the virus coats were removed from bacteria by agitating in a blender, the virus particles were isolated from the bacteria on centrifugation. Bacteria infected with viruses containing radioactive DNA were radioactive, whereas bacterial cells infected with virus-containing radioactive protein did not show radioactivity.

They reached on the conclusion that the genetic material that DNA is passed from the virus to bacteria.

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Safeer PP

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