penetrance

[ pen-i-truh ns ]
/ ˈpɛn ɪ trəns /

noun Genetics.

the frequency, expressed as a percentage, with which a particular gene produces its effect in a group of organisms. Compare expressivity(def 2).

Origin of penetrance

First recorded in 1635–45; penetr(ant) + -ance

Example sentences from the Web for penetrance

British Dictionary definitions for penetrance

penetrance
/ (ˈpɛnɪtrəns) /

noun

genetics the percentage frequency with which a gene exhibits its effect

Word Origin for penetrance

C20: from penetr ( ant) + -ance, on the model of German penetranz

Medical definitions for penetrance

penetrance
[ pĕnĭ-trəns ]

n.

The frequency, under given environmental conditions, with which a specific genotype is expressed by those individuals that possess it, usually given as a percentage.