Both Dominant and simple recessive traits are displayed quite frequently in the wild of some animals.

California Kingsnakes have the "Striped" morph which is dominant. In some areas it is more common than the Ringed or Normal type that is recessive.

The Melanistic Garter snakes of the Great Lakes regions are very common. The melanistic gene is simple recessive, but it apparently has become advantagious in those areas.

The same goes for color and pattern morphs in moths, shrews, deer mice, hawks, and squirrels. In my area there are black, red, and two-toned Fox squirrels. All the same species, all intermate, and all seem to do just fine.
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Lincoln, NE
0.1 Pastel, 1.0 Pastel het Pied, 0.1 Pied, 0.1 Cinn, 1.0 Black Pewter, 1.0 Woma (hidden gene?), 0.1 Yellowbelly
2.1 Normals, 1.0 Thayeri, 0.1 Thayeri X Alterna, 0.1 Whitesided P. catenifer sayi, 0.1 crazy cat, 1.0 husband

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