Simulation of dominant inheritance of a recessive trait, e.g., a heterozygote mating with an affected homozygote resulting in the manifestation of the recessive trait generation after generation. SYN: false dominance, pseudodominance.

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qua·si·dom·i·nance (kwah″ze-domґĭ-nəns) [quasi- + dominance] the mimicking of dominance in inheritance, with roughly half of the offspring expressing a phenotype, but actually caused by mating of a carrier of a recessive gene with an individual homozygous for the gene; it can be distinguished from dominance by examination of an extended pedigree. quasidominant adj

Medical dictionary. 2011.

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