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penetrance: Meaning and Definition of

pen•e•trance

Pronunciation: (pen'i-truns), [key]
— n. Genetics.
  1. the frequency, expressed as a percentage, with which a particular gene produces its effect in a group of organisms. Cf.(def. 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
penetralia penetrant
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