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)co-dominance

Question

Quizplus · Accepted Answer

The fact that the enzymes that code for dark fur color are only active in cooler temperatures suggests that this is an environmental effect. The cooler temperature affects the expression of the gene, resulting in the only dark fur color at certain parts of the body.

In Siamese Cats,enzymes That Code for Dark Fur Color Are