The agouti gene is one of the genes involved in fur patterns and shadings in animals.
The agouti signalling peptide is a circulating hormone that acts as an antagonist at melanocortin receptors
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Agouti refers to a number of species of rodents, as well as a number of genes affecting coat coloration in several different animals.
The term agouti refers to animals with banded, or brindled, fur — each individual guard hair is not one solid color but instead has "stripes" of (usually) fl, brown and white producing an animal which is not a solid color but appears speckled or brindled.
The agoutigene is responsible for the bay coloring of horses.