doubly heterozygous

dou·bly het·er·o·zy·gous

in the analysis of linkage between two loci, denoting that genotype in which a parent is heterozygous at both loci, the state that on average contains the maximum information about the linkage.

dou·bly het·er·o·zy·gous

(dŭb'lē het'ĕr-ō-zī'gŭs) Denoting that genotype in which a parent is heterozygous at both loci, the state that on average contains the maximum information about the linkage.