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When a single copy of an allele on an autosome is sufficient to result in a phenotype. The allele, phenotype and inheritance pattern are referred to as dominant.

Use in clinical context

Depending on the context, autosomal dominant can refer to an allele, a phenotype or an inheritance pattern. An autosomal dominant phenotype is the result of an autosomal dominant allele, only one copy of which is required for the phenotype to present. The inheritance pattern in a family history is also recognised as autosomal dominant inheritance.

Last updated on 3rd June, 2020