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experimental design by hershey and chase designed a elegant experiment due to its simplicity and certainty to find the answer.There were two possible sources of heritable material and their experiment was going to find the answer whether it turned out to be protein or DNA.
Rather than just trying to demonstrate it was DNA or just trying to prove protein was not the heritable material, their experiment did both simultaneously. The brilliance of their design was best revealed by choosing a bacteriophage as the model system since it contains only protein and DNA. so it is termed as classic experiment
in the experiment they observed that E.coli bacteria which were infected by radioactive DNA viruses (A) were radioactive but the ones that were infected by radioactive protein viruses (B) were non-radioactive.
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