wildtype

Main Entry: wild type
Function: noun
: a phenotype, genotype, or gene that predominates in a natural population of organisms or strain of organisms in contrast to that ofnatural or laboratory mutant forms; also : an organism or strain displaying the wild type —wild–type adjective

wild type n.
The typical form of an organism, strain, gene, or characteristic as it occurs in nature, as distinguished from mutant forms that may result from selective breeding.