Question

In a mouse population, some mice have thicker fur than others, but there are more mice with thinner fur. The climate in which these mice live has slowly gotten colder. How will this change in the environment most likely affect the mouse population

Answer 1

The mice with thinner fur will eventually become less, and the mice with thicker fur will adapt better since they will be able to naturally keep warm.

Answer 2

The adaptation of thicker fur will be selected over thinner fur, and the population will evolve.