character: Thomas Morgan
topic: Chromosomal Theory of Inheritance
grade: 9
subject: Biology
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character: Gregor Mendel
topic: Foundations of Genetics
grade: 9
subject: Biology
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character: Walter Sutton
topic: Chromosomal Theory Development
grade: 9
subject: Biology
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character: Hugo de Vries
topic: Mutation Theory of Evolution
grade: 9
subject: Biology
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