pen·e·trance (p n  -tr ns)n. The frequency, under given environmental conditions, with which a specific phenotype is expressed by those individuals with a specific genotype. |
penetrance [ˈpɛnɪtrəns]
n
(Life Sciences & Allied Applications / Genetics) Genetics the percentage frequency with which a gene exhibits its effect
[from penetr(ant) + -ance, on the model of German penetranz]
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