Complete Dominance, Incomplete Dominance, Codominance

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What is Complete Dominance?

Back

A genetic scenario where one allele completely masks the effect of another allele in a heterozygote, resulting in the dominant phenotype being expressed.

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What is Incomplete Dominance?

Back

A genetic scenario where the heterozygote expresses a phenotype that is a blend of the two alleles, rather than one being completely dominant over the other.

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What is Codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits simultaneously.

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Example of Complete Dominance in animals?

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A brown snake crossed with a yellow snake resulting in all brown offspring.

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Example of Incomplete Dominance in plants?

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A cross between red and white flowers resulting in pink flowers.

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Example of Codominance in animals?

Back

A calico cat showing both orange and black fur.

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What is the phenotype of a heterozygote in Complete Dominance?

Back

The phenotype of the dominant allele.

Front

What is the phenotype of a heterozygote in Incomplete Dominance?

Back

A blend of the phenotypes of both alleles.

Front

What is the phenotype of a heterozygote in Codominance?

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Both phenotypes of the alleles are expressed equally.

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What is the probability of obtaining a pink flower from a red and white flower cross in Incomplete Dominance?

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100%.