C. briggsae phenotype assignments in WormBase. C. briggsae is a nematode species that is closely related to C. elegans . (a) Shown are excerpts from the AF16 strain page, a wild-type form of C. briggsae, which reports the associated phenotype annotations and the corresponding references that describe the controls for each of the experiments. (b) Shown are excerpts from the v53 variation report page, listing observed phenotypes and corresponding references. v53 is a C. briggsae she-1 mutant.