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词汇 penetrance
释义

Definition of penetrance in English:

penetrance

noun ˈpɛnɪtr(ə)nsˈpenətrəns
mass nounGenetics
  • The extent to which a particular gene or set of genes is expressed in the phenotypes of individuals carrying it, measured by the proportion of carriers showing the characteristic phenotype.

    〔遗传〕外显率

    Example sentencesExamples
    • With the exception of the relatively rare high penetrance, single gene disorders, genetic tests differ little from most other medical tests, providing evidence of statistical risk only.
    • Because of reduced penetrance, individuals of different genotypes can have the same phenotype.
    • The penetrance of these phenotypes was background dependent.
    • High penetrance susceptibility genes probably account for no more than 5-10% of cases.
    • However, other low penetrance susceptibility genes may exist which may alter individual predisposition to breast cancer.

Origin

1930s: from German Penetranz.

Definition of penetrance in US English:

penetrance

nounˈpenətrəns
Genetics
  • The extent to which a particular gene or set of genes is expressed in the phenotypes of individuals carrying it, measured by the proportion of carriers showing the characteristic phenotype.

    〔遗传〕外显率

    Example sentencesExamples
    • High penetrance susceptibility genes probably account for no more than 5-10% of cases.
    • Because of reduced penetrance, individuals of different genotypes can have the same phenotype.
    • With the exception of the relatively rare high penetrance, single gene disorders, genetic tests differ little from most other medical tests, providing evidence of statistical risk only.
    • The penetrance of these phenotypes was background dependent.
    • However, other low penetrance susceptibility genes may exist which may alter individual predisposition to breast cancer.

Origin

1930s: from German Penetranz.

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