Trihybrid | definition of trihybrid by Medical dictionary
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The offspring of parents that differ in three mendelian characters.
[tri- + L. hybrida, hybrid]
The hybrid of parents that differ at only three gene loci, for which each parent is homozygous.
Etymology: Gk, treis + hybrida, mixed offspring
pertaining to an individual, organism, or strain that is heterozygous for three specific traits; the offspring of parents differing in three specific gene pairs or that is heterozygous for three particular traits or gene loci being followed.
trihybrid (trī-hī′brĭd) [Gr. treis, three, + L. hybrida, mongrel]
In genetics, the offspring of a cross between two individuals differing in three unit characters.
References in periodicals archive
Virgin females (designated by a Venus symbol combined with a "V") may be either dihybrid (A or B) or trihybrid (C or D).
Four possible exercises are presented: two dihybrid testcrosses (Figure 2A,B) and two trihybrid testcrosses (Figure 2 C,D).
Although I describe our specific class example in which we use this method with the F2 data from a dihybrid Drosophila cross, this method could easily be adjusted for analysis of a Drosophila trihybrid
cross as well, mapping each pair of genes individually (Brooker, 2005).
While Punnett squares are a useful device for determining the outcome of genetic crosses, they can become cumbersome for dihybrid or trihybrid