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MACROMOLECULES: State: Importance and logic of experiment 35s and 32p

MACROMOLECULES:

State: Importance and logic of experiment 35s and 32p

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Hershey and chase conducted several experients to prove that DNA is genetic material not protein. The logic behind therir experiments using 35S and 32P is, sulphur is present in protein and it is absent in DNA, where as phophorous is present in DNA but absent in protein. So, they developed two different bacteriophases one with sulphur lablled (only protein) and another one is phophorous labelled (only DNA) and they studied the radioacitve activity after generations, as the they detected 32P after generations they conculded that DNA is genetic material.

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