penetrance definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Genetics the degree of regularity with which a gene produces its specific effect in its carriers in a population
Origin: ; from penetr(ate) plush -ance
penetrance definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The frequency, under given environmental conditions, with which a specific phenotype is expressed by those individuals with a specific genotype.
penetrance - Medical Definition
The frequency, under given environmental conditions, with which a specific genotype is expressed by those individuals that possess it, usually given as a percentage.