Biology - Intro Genetics Vocabulary

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Genotype

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An organism's genetic makeup, or allele combinations.

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Dominant Allele

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An allele that is always expressed when present.

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Heredity

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The passing of traits from parent to offspring.

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Heterozygous

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An organism that has two different alleles for a trait.

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Genetics

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The study of heredity.

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Phenotype

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The physical expression or characteristics of 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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Homozygous

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An organism that has two identical alleles for a trait.

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Recessive Allele

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An allele that is only expressed when two copies are present.

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Punnett Square

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A diagram used to predict the outcome of a genetic cross.