character: James Watson
topic: Discovery of DNA's double helix structure
grade: 10
subject: Science
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character: Francis Crick
topic: Collaboration with Watson on DNA structure
grade: 10
subject: Science
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character: Rosalind Franklin
topic: Contributions to understanding DNA
grade: 10
subject: Science
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character: Erwin Chargaff
topic: Chargaff's rules and their significance in DNA study
grade: 10
subject: Science
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