character: Avery
topic: Discovery of DNA
grade: 3
subject: Writing
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character: Watson and Crick
topic: Double Helix Model of DNA
grade: 3
subject: Writing
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character: Erwin Chargaff
topic: Chargaff's Rules on DNA Bases
grade: 3
subject: Writing
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character: Rosalind Franklin
topic: X-ray Diffraction and DNA Structure
grade: 3
subject: Writing
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