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nonpenetrance

nonpenetrance in Medicine

nonpenetrance non·pen·e·trance (nŏn-pěn'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.

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