Genetics Vocabulary

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Phenotype

Back

an organism's physical appearance.

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Hybrid

Back

an organism that has 2 different alleles for a trait; an organism that is heterozygous for a trait.

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Homozygous

Back

having two identical alleles for a trait.

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Heterozygous

Back

having two different alleles for a trait.

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Offspring

Back

a parent's child or children.

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Genotype

Back

an organism's genetic makeup or allele combination.

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Allele

Back

a variant form of a gene.

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Dominant allele

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an allele that expresses its phenotype even in the presence of a recessive allele.

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Recessive allele

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an allele that only expresses its phenotype when two copies are present.

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Trait

Back

a characteristic that an organism can pass onto its offspring.