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nonpenetrance

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American Heritage Stedman's Medical Dictionary:

non·pen·e·trance

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(nŏn-pĕn'ĭ-trəns)
n.
  1. The state in which a genetic trait although present in the appropriate genotype fails to manifest itself in the phenotype.
  2. The obscuring of genetic traits by nongenetic mechanisms.

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

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