title: Color vision in squirrel monkeys: sex-related differences suggest the mode of inheritance.
abstract: Behavioral tests of vision in squirrel monkeys (Saimiri sciureus) reveal that there are widespread individual variations in color vision in this species. The variation has a sex-related component: whereas both trichromatic and dichromatic color vision occurs among female monkeys, males appear exclusively dichromatic. This finding suggests that, unlike humans, squirrel monkeys have only a single photopigment locus on the X chromosome.
mesh_terms: D000818:Animals; D002427:Cebidae / Q000502:physiology*; D003118:Color Perception / Q000502:physiology*; D005260:Female; D008297:Male; D012453:Saimiri / Q000235:genetics / Q000502:physiology*; D012737:Sex Factors