Genetics Vocabulary

Front

Study of heredity

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genetics

Front

A model used to predict all the possible genotypes and phenotypes of an organism's offspring

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Punnett Square

Front

Different forms of a gene like different eye colors

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alleles

Front

If two different alleles are inherited by an organism, then an organism is ___ for that trait.

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heterozygous

Front

A genetic factor blocked by another genetic factor -- represented by a lowercase letter

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recessive trait

Front

The observable characteristics of an organism, determined by its genotype

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phenotype

Front

The genetic makeup of an organism, represented by letters (e.g., AA, Aa, aa)

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genotype

Front

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

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dominant trait

Front

The physical location of a gene on a chromosome

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locus

Front

A segment of DNA that codes for a specific protein or trait

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gene