Complete penetrance

Definition

noun

A form of penetrance where a deleterious or disease-causing gene is expressed in all individuals carrying the gene.


Supplement

A disease-causing gene shows 100% or complete penetrance if all individuals who have this gene develop the associated trait or condition. Huntington's disease is a dementia that is genetically inherited as an autosomal-dominant trait with a complete lifetime penetrance.


Compare: incomplete penetrance


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