A genotype at one locus that produces a phenotype which at some levels of resolution is indistinguishable from that produced by another genotype; e.g., two types of elliptocytosis that are genocopies of each other, but are distinguished by the fact that one is linked to the Rh blood group locus and the other is not.
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ge·no·copy (jeґno-kop″e) a phenotype that appears identical to another phenotype but that is caused by a different genetic mechanism. See also phenocopy.Medical dictionary. 2011.