penetrance

详细解释:n. 外显率
【计】 渗透率
【医】 透入度; 外显率

详细解释：

pen.e.trance

n.（名词）
The frequency, under given environmental conditions, with which a specific genotype is expressed by those individuals that possess it.
外显率（基因）：具有特定遗传基因的个体在一定环境下表现其遗传基因的概率