In Siamese cats, enzymes that code for dark fur color are only active in cooler temperatures. Thus, the tips of a Siamese cat's ears, feet, and tail are dark but not the warmer regions of its body core. This is an example of ____.
A) pleiotropy
B) environmental effects
C) epistasis
D) incomplete dominance
E) codominance

Question

Quizplus · Accepted Answer

This is an example of environmental effects because the expression of the genes for fur color in Siamese cats is influenced by the temperature of their environment.

In Siamese Cats, Enzymes That Code for Dark Fur Color