Penetration

Penetration is the degree of agreement between a genotype and the expected phenotype. Genotype does not always clearly determine phenotype.

According to the degree of manifestation, we distinguish between incomplete penetrance (in individuals with a certain genotype, we find the corresponding phenotypic manifestation in only some individuals) and complete penetrance (in individuals with a certain genotype, we find the corresponding phenotypic manifestation in all individuals). We use percentages to express the degree of penetration.

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