character: James Watson
topic: Contributions to DNA Structure
grade: 3
subject: Writing
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character: Francis Crick
topic: Discovery of DNA Double Helix
grade: 3
subject: Writing
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character: Rosalind Franklin
topic: X-ray Diffraction Images of DNA
grade: 3
subject: Writing
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character: Maurice Wilkins
topic: Research on DNA Structure
grade: 3
subject: Writing
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