In the winter, the fur of the arctic fox is white.  In summer, the fur darkens to a reddish brown.  What most likely causes the fur of the fox to change color? A. the amount of sunlight present B. the fox’s habitat C. the fox’s genes D. the fox’s age

The red fox lives in temperate regions and has a dark, reddish coat to help it hide from predators.  The kit fox is sandy-colored and blends in with its desert surroundings.  This is an example of closely related organisms evolving in different directions and becoming increasingly different.  Which term best describes this pattern?Group of answer choicesMutationFounder effectDivergent evolutionConvergent evolution

What must an arctic fox do in order to keep its body from becoming too cold?A.Migrate to warmer areasB.Rest on a warm surface in the sunC.Lose fat during the warmer monthsD.Eat energy-rich foods

Learning goal 1: Fur colour in wolves is a genetic trait. This means that a wolf inherits its fur colour from its parents.TrueFalse

Some mammals have genes for fur color that pro- duce pigment only when the outside tempera- ture is above a certain level. This pigment pro- duction is an example of how the environment of an organism can (1) destroy certain genes (2) cause new mutations to occur (3) stop the process of evolution (4) influence the expression of certain genes

In a population of rabbits, fur color ranges from white to black, with various shades of gray in between. Over several generations, it is observed that the population increasingly consists of white and black rabbits, with fewer gray rabbits. Which pattern of natural selection is most likely responsible for this change in fur color distribution?Question 9Answera.Directional Selectionb.Balancing Selectionc.Stabilizing Selectiond.Disruptive Selection