character: James Watson
topic: Double Helix Model of DNA
grade: 9
subject: Biology
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character: Francis Crick
topic: Collaborator in DNA Structure Discovery
grade: 9
subject: Biology
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character: Rosalind Franklin
topic: X-ray Diffraction Images of DNA
grade: 9
subject: Biology
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character: Chargaff
topic: Base Pairing Rules in DNA
grade: 9
subject: Biology
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