An Example of Environmental Effect on a Gene (IMAGE)

Washington University in St. Louis

An Example of Environmental Effect on a Gene

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This is a good example of the influence of the environment on genes is the coat pattern in a seal-point Siamese cat. Siamese cats have a heat-sensitive enzyme that is inactivated by body heat on the head and torso of the cat, leaving the coat there uncolored, but is active on the cooler ears, face and tail, turning these areas dark.

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Thaifong/<a target="_blank" href="http://commons.wikimedia.org/wiki/File:Modern_Seal_Point_Female.jpg">CC License</a>

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