character: Phenotype
topic: The Observable Traits of an Organism
grade: 9
subject: Biology
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character: Genotype
topic: The Genetic Makeup of an Organism
grade: 9
subject: Biology
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character: Alleles
topic: Variations of a Gene Affecting Phenotype
grade: 9
subject: Biology
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character: Natural Selection
topic: How Phenotypes Influence Survival and Reproduction
grade: 9
subject: Biology
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