genomic variation complement GENO_0000009

genomic variation complement

ID: GENO_0000009

A genomic feature set representing all 'variant single locus complements' in a single genome, which together constitute the 'variant' component of a genomic genotype.

A 'complement' refers to an exhaustive collection of *all* objects that make up some well-defined set. Such a complement may contain 0, 1, or more than one members. The notion of a complement is useful for defining many biologically-relevant sets of sequence features. Here, a 'genomic variation complement' is the set of all 'single locus complements' in a particular genome that harbor some known variation. In model organisms, the majority of genotypes describe variation at a single location in the genome (ie only one 'single-locus variant complement') that are variant realtive to some reference background. For example, the genotype instance 'fgf8a(AB)') exhibits a mutation at only one locus. But some genotypes describe variation at more than one location (e.g. a double mutant that has alterations in the fgf8a gene and the shh gene)).