character: Frederick Griffith
topic: Transforming principle in bacteria
grade: 11
subject: Biology
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character: Avery, MacLeod, and McCarty
topic: DNA as the transforming principle
grade: 11
subject: Biology
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character: Hershey and Chase
topic: DNA as genetic material in viruses
grade: 11
subject: Biology
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character: Meselson and Stahl
topic: Semi-conservative replication of DNA
grade: 11
subject: Biology
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