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Medical Term:

nonpenetrance

Pronunciation: non-pen'e-trants

Definition: The state in which a genetic trait, although present in the appropriate genotype (homozygous, hemizygous, or heterozygous according to the state of dominance and mode of inheritance), fails to manifest itself in the phenotype because of modifying factors.

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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