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penetrance

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Penetrance
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pen⋅e⋅trance

  [pen-i-truhns]
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–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:
1635–45; penetr(ant) + -ance
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Penetrance
Get the Answers You're Looking For. Penetrance
www.RightHealth.com/Oncology
pen·e·trance   (pěn'ĭ-trəns)   
n.  The frequency, under given environmental conditions, with which a specific phenotype is expressed by those individuals with a specific genotype.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: pen·e·trance
Pronunciation: 'pen-&-tr&n(t)s
Function: noun
: the proportion of individuals of a particular genotype thatexpress its phenotypic effect in a given environment —compare EXPRESSIVITY
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

penetrance pen·e·trance (pěn'ĭ-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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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