character: Francis Crick
topic: The Role of Base Pairing in DNA Structure
grade: 9
subject: Science
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character: James Watson
topic: Discovery of DNA Structure
grade: 9
subject: Science
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character: Rosalind Franklin
topic: X-Ray Diffraction and DNA
grade: 9
subject: Science
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character: Avery, MacLeod, and McCarty
topic: Transforming Principle in DNA
grade: 9
subject: Science
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