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Solution


Q.

Unequivocal proof that DNA is the genetic material was first proposed by            [2023]
1 Avery, Macleoid and McCarthy  
2 Wilkins and Franklin  
3 Frederick Griffith  
4 Alfred Hershey and Martha Chase  

Ans.

(4)

The unequivocal proof that DNA is the genetic material came from the experiments of Alfred Hershey and Martha Chase (1952). They worked with viruses that infect bacteria called bacteriophages.