12th Class Biology Molecular basis of inheritance

  • question_answer 7) How did Hershey and Chase differentiate between DNA and protein in their experiment, while proving DNA is the genetic material? 


    Hershey and Chase (1952) worked on viruses which infect bacteria called bacteriophages. They concluded with their experiment that bacteria which were infected with viruses that had radioactive DNA were found to be radioactive. It gave the idea that DNA acted as hereditary material which was transmitted from bacteriophage to bacteria. Bacteria which were infected with bacteriophages (viruses) that has radioactive proteins. They were not found to be radioactive. It indicates that proteins are not transmitted to bacteria.  

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