Dihübriidses

Dihübriidses is a term used in genetics to denote the study or manifestation of two simultaneous dihybrid processes within a single organism or population. The word combines dihybrid (dihübriid) with a plural suffix -ses, reflecting multiple instances or cases of the phenomenon. In this framework, an organism carrying two independently assorting gene pairs at two loci is considered in a dihubriidses analysis, which tracks the distribution of allele combinations across generations.

Mechanism: In classic dihybrid analysis, crossing Aa Bb with Aa Bb yields a proportionate distribution of four gamete types. In dihubriidses the focus is on the result when two such dihybrid events occur in parallel, such as two gene sets undergoing segregation within the same lineage, including potential linkage and recombination. The approach emphasizes how allele combinations are created and reshuffled, illustrating Mendelian principles as well as epistatic interactions.

Applications: The concept is used in teaching to illustrate linkage, recombination, and epistasis in a two-gene context, and can be applied to population genetics models that examine multi-locus inheritance in hybrid zones or selective sweeps.

Limitations: As a descriptive concept, dihubriidses does not denote a single, widely adopted mechanism but a framework for discussing two simultaneous dihybrid processes.

See also: Dihybrid cross, Mendelian inheritance, Gene linkage, Recombination.