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Question
The final proof for DNA as the genetic material came from the experiments conducted by ______.
Options
Watson and Crick
Hershey and Chase
Franklin and Wilkins
Har Gobind Khorana
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Solution
The final proof for DNA as the genetic material came from the experiments conducted by Hershey and Chase.
Explanation:
The final and unequivocal proof that DNA is the genetic material was provided by Alfred Hershey and Martha Chase in 1952. Through their famous Bacteriophage (T2 virus) experiment, they used radioactive isotopes, Phosphorus-32 to label DNA and Sulfur- 35 to label the protein coat. They observed that only the radioactive DNA entered the bacterial cells during infection, while the protein remained outside, definitively proving that DNA, not protein, carries hereditary information.
