dihybrid(redirected from dihybridism)
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The offspring of parents differing in two characters.
[G. di-, two, + L. hybrida, offspring of a tame sow and a wild boar]
The offspring of parents that are each homozygous for different alleles of two genetic loci.
Etymology: Gk, di, twice; L, hybrida, mongrel offspring
pertaining to an individual, an organism, or a strain that is heterozygous for two specific traits, that is the offspring of parents differing in two specific gene pairs, or that is heterozygous for two particular traits or gene loci being followed.
- an organism that carries two different ALLELES of one gene and two different alleles of another gene. For example, character A (controlled by alleles A 1 and A2) and character B (alleles B1 and B2 ). The dihybrid would have the genotype A1A2 B1B2, i.e. a double HETEROZYGOTE.
- (of a cross) having two parents that have been mated to produce dihybrids that are then also mated. A single dihybrid plant is self-fertilized (see SELF-FERTILIZATION). MENDEL formulated his law of INDEPENDENT ASSORTMENT from the results of a dihybrid cross involving pairs of contrasting characters in the pea plant.