character: Gregor Mendel
topic: Mendel's Laws of Inheritance
grade: 9
subject: Biology
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character: Charles Darwin
topic: Principles of Natural Selection
grade: 9
subject: Biology
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character: Thomas Hunt Morgan
topic: Chromosomal Theory of Inheritance
grade: 9
subject: Biology
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character: Watson and Crick
topic: Structure of DNA and Heredity
grade: 9
subject: Biology
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