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(C) Alfred Hershey and Martha Chase $(1952)$ conducted experiments using bacteriophages that infect $E. coli$ bacteria.They grew some viruses in a med

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Hershey and Chase

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(C) Alfred Hershey and Martha Chase $(1952)$ conducted experiments using bacteriophages that infect $E. coli$ bacteria.They grew some viruses in a medium containing radioactive phosphorus $(^{32}P)$ to label $DNA$ and others in a medium containing radioactive sulfur $(^{35}S)$ to label proteins.After allowing the viruses to infect the bacteria,they used a blender to separate the viral coats from the bacterial cells and then centrifuged the mixture.They observed that radioactive phosphorus $(^{32}P)$ was found inside the bacterial cells,while radioactive sulfur $(^{35}S)$ remained in the supernatant (viral coats).This proved that $DNA$ is the genetic material that enters the bacteria,not the protein.

Which scientist experimentally proved that $DNA$ is the sole genetic material in bacteriophage?

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