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Heredity Vocabulary

Review Key Terms for Variations in Traits

TermDefinition
Phenotype The physical appearance of an organism.
Genotype The genetic makeup of an organism.
Homozygous Trait A trait determined by a gene with identical alleles.
Heterozygous Trait A trait determined by a gene with different alleles.
Allele A single version of a gene inherited from mom or dad.
Dominant Allele Allele's that are visible, indicated by an uppercase letter.
Recessive Allele Allele's that may disappear, indicated by a lowercase letter.
Punnett Square A tool used to analyze possible allele combinations.
Created by: eclairekelley
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