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CBSE Class 12-science Answered

How did Hershey and Chase differentiate between DNA and protein in their experiment, while proving DNA is the genetic material?  
Asked by Topperlearning User | 16 Jun, 2014, 04:40: PM
answered-by-expert Expert Answer

Hershey and Chase grew some bacteriophages on a medium containing radioactive phosphorus (32P) to identify DNA and some on a medium containing radioactive sulphur (35S) to identify protein. Then these radioactive-labelled phages were allowed to infect E. coli bacteria subjected to the process of centrifugation.

It gave an idea that DNA acted as hereditary material which was transmitted from bacteriophage to bacteria. Bacteria which were infected with bacteriophages had radioactive proteins.

Answered by | 16 Jun, 2014, 06:40: PM
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