An individual having different alleles at one or more loci regarding a specific character.
https://www.medg.fr/hypercholesterolemie-familiale-heterozygote 2018 France teaching material scientific and technical information heterozygote Hypercholesterolemia familial hypercholesterolemia hyperlipoproteinemia type ii heterozygote high serum cholesterol, familial high serum cholesterol, familial