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Lesson Flashcards: Lack of Dominance Biology

Codominance

When two alleles are expressed simultaneously, and without blending, in the phenotype of an organism heterozygous for a trait

Incomplete dominance

When an intermediate phenotype is created in an organism heterozygous for a trait

Allele

An alternative version of a gene

Heterozygous

Having two different alleles of a particular gene or genes

Complete dominance

When a dominant allele completely masks the expression of the recessive allele in heterozygous individuals

Multiple alleles

More than two alternative versions of a gene

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