Heredity and Genetics Vocab

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Heredity:

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Passing of traits from parents to offspring.

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Genetics: study of trait inheritance from parents to offspring.

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The study of how traits are passed from parents to offspring.

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Dominant trait:

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A genetic factor that blocks another genetic factor; it is stronger.

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Recessive trait:

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A genetic factor blocked by a dominant factor.

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Gene: A section on a chromosome with genetic info for a trait.

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A section on a chromosome that has genetic information for the trait

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Alleles: Different forms of a gene

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Different forms of a gene

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Phenotype: How a trait appears or is expressed

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How a trait appears or is expressed

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Genotype definition

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The two alleles that control the phenotype of a trait.

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Homozygous definition

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Two alleles of a gene are the same.

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Heterozygous definition

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Two alleles of a gene are different.