character: Rosalind Franklin
topic: Contributions to DNA structure discovery
grade: 6
subject: History
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character: James Watson
topic: Discovery of the DNA double helix
grade: 6
subject: History
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character: Francis Crick
topic: Collaboration with Watson on DNA structure
grade: 6
subject: History
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character: Maurice Wilkins
topic: Role in DNA research and contribution to the Watson-Crick model
grade: 6
subject: History
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