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Medical Definition of Penetrant trait
1. A trait that in the appropriate genotypes is phenotypically manifest; strictly, it is the trait that is penetrant, not the gene. See: penetrance. (05 Mar 2000)
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1. A trait that in the appropriate genotypes is phenotypically manifest; strictly, it is the trait that is penetrant, not the gene. See: penetrance. (05 Mar 2000)