Unequivocal proof that DNA is the genetic material was first proposed by:
Wilkins and Franklin
Frederick Griffith
Alfred Hershey and Martha Chase
Avery, Macleod and McCarthy
According to the text, while Avery, Macleod, and McCarty determined that DNA is the hereditary material, not all biologists were convinced. The text states: 'The unequivocal proof that DNA is the genetic material came from the experiments of Alfred Hershey and Martha Chase (1952).'
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