character: Francis Crick
topic: Discovery of the DNA Double Helix
grade: 9
subject: Biology
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character: James Watson
topic: Co-discoverer of the DNA Double Helix
grade: 9
subject: Biology
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character: Rosalind Franklin
topic: Contributions to understanding DNA structure
grade: 9
subject: Biology
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character: Maurice Wilkins
topic: X-ray diffraction studies of DNA
grade: 9
subject: Biology
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