character: Francis Crick
topic: DNA Double Helix
grade: 10
subject: Biology
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character: James Watson
topic: Discovery of DNA Structure
grade: 10
subject: Biology
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character: Rosalind Franklin
topic: X-ray Crystallography and DNA
grade: 10
subject: Biology
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character: Erwin Chargaff
topic: Chargaff's Rules in DNA Structure
grade: 10
subject: Biology
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