character: James Watson
topic: Discovering DNA Structure
grade: 9
subject: Biology
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character: Francis Crick
topic: Collaboration with Watson on DNA
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: Maurice Wilkins
topic: Role in DNA research
grade: 9
subject: Biology
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