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  • Title: Color vision in squirrel monkeys: sex-related differences suggest the mode of inheritance.
    Author: Jacobs GH, Neitz J.
    Journal: Vision Res; 1985; 25(1):141-3. PubMed ID: 3984212.
    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.
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