Genetics: Traits and Alleles

Front

The passing of traits from parents to offspring

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Heredity

Front

A version of a gene that can be dominant or recessive

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allele

Front

The physical appearance of an organism based on its genetic makeup (example: blue eyes)

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phenotype

Front

The genetic makeup of an organism (represented by alleles such as Aa)

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genotype

Front

The stronger allele that is always expressed when present

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Dominant Allele

Front

The weaker allele that is only expressed when two copies are present

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Recessive Allele

Front

An inherited characteristic, such as eye color

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trait

Front

a section of DNA that determines a specific trait

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gene

Front

Having two identical alleles for a trait

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homozygous

Front

having two different alleles for a trait

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heterozygous