Gene (C) controls fur pigmentation in Himalayan rabbits. Although the two rabbits in the picture have the same genotype, the rabbit reared at
temperatures above 30°C has no black fur pigmentation on its ears, nose, and feet.

The gene C is inactive at these higher temperatures. The gene fails to express the particular phenotype specified by the gene. In this case, temperature is an environmental influence that affects gene expression.

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Gene (C) controls fur pigmentation in Himalayan rabbits. Although the two rabbits in the picture have the same genotype, the rabbit reared at temperatures above 30°C has no black fur pigmentation on its ears, nose, and feet.

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Gene (C) controls fur pigmentation in Himalayan rabbits. Although the two rabbits in the picture have the same genotype, the rabbit reared at
temperatures above 30°C has no black fur pigmentation on its ears, nose, and feet.