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Question

In Hershey and Chase’s experiments, radioactive 32P was used to culture bacteriophages which resulted in radioactive

A
viral DNA
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B
bacterial capsid
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C
viral proteins
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D
protein capsule of bacteriophage
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Solution

The correct option is A viral DNA
In Hershey and Chase experiments, when radioactive phosphorus was used to culture bacteriophages it was incorporated into the phosphate groups present in the DNA of the virus which turned radioactive. Radioactivity could not be detected in the viral protein because proteins do not contain phosphorus.
The capsid is the protein envelope found in viruses, not in bacteria.

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