character: Meselson and Stahl
topic: Semi-conservative replication of DNA
grade: 11
subject: Biology
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character: Watson and Crick
topic: Structure of DNA
grade: 11
subject: Biology
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character: Rosalind Franklin
topic: X-ray diffraction of DNA
grade: 11
subject: Biology
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character: Hershey and Chase
topic: DNA as the genetic material
grade: 11
subject: Biology
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