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The final proof for DNA as the genetic material came from the experiments of:

1. Hershey and Chase
2. Avery, Mcleod and McCarty
3. Hargobind Khorana
4. Griffith

Correct answer: Hershey and Chase

Solution

Hershey and Chase used bacteriophages labeled with radioactive phosphorus and sulfur to track which molecule entered bacteria. Their results showed DNA was the genetic material, providing the final confirmation.

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