显性 xiǎnxìng overt Origin Definitions Defs Strokes Stroke Words Sentences Sents 外显性 wàixiǎnxìng penetrance the proportion of individuals carrying a particular variant of a gene who also express an associated trait, especially in genetics显性基因 xiǎnxìngjīyīn dominant gene a gene that produces a physical trait even if only one copy is present in an organism' a pair