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Codominance in AP Biology

Written by the Fiveable Content Team
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team

Definition

Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the two alleles are different, they will both be expressed equally in the phenotype.

AP course connection

Topic 5.4: 5.4 Non-Mendelian Genetics

Unit 5

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