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Trait

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Ways of looking, thinking, or being that are passed down through the genes from parents to offspring.

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Heredity

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The passing of traits from parent to offspring.

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Phenotype

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The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

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Gene

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The material that controls which traits are expressed in an organism.

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Allele

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Different forms of a gene that can exist at a specific locus.

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Dominant Trait

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A trait that is expressed when at least one dominant allele is present.

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Recessive Trait

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A trait that is only expressed when two recessive alleles are present.

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Genotype

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The genetic makeup of an organism, representing the alleles inherited from the parents.

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Punnett Square

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A tool to predict the probability of certain traits that could be found in the offspring.

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Heterozygous Allele

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An organism that has two different alleles for a specific trait.