one of two or even more alternative forms of a gene that may have the same place on homologous chromosomes consequently they are accountable for alternate faculties
- (genetics) either of moobs (or show) of alternate forms of a gene that may occupy exactly the same locus on a certain chromosome and that control exactly the same personality
an alternative solution kind of a gene.
1931, from German allel, abbreviation of allelomorph (1902), coined from Greek allel- "one another" (from allos "other;" see alias (adv.)) + morphe "form" (see Morpheus).