character: James Watson
topic: Discovering DNA Structure
grade: 3
subject: Social Studies
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character: Francis Crick
topic: Contribution to DNA Discovery
grade: 3
subject: Social Studies
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character: Rosalind Franklin
topic: X-ray Diffraction and DNA
grade: 3
subject: Social Studies
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character: Maurice Wilkins
topic: DNA Research and Collaboration
grade: 3
subject: Social Studies
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