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.
References in periodicals archive ?
It would then appear that 1 of our 2 patients who is homozygous for the FVL mutation and heterozygous for the prothrombin G20210A mutation has a substantially greater risk compared with a doubly heterozygous patient, possibly explaining in part the fact that this patient had 10 episodes of thrombosis by the time of analysis.