Natural selection should favor the highest proportion of juxtamedullary nephrons in which of the following species?
A)a river otter
B)a mouse species living in a tropical rain forest
C)a mouse species living in a temperate broadleaf forest
D)a mouse species living in the desert
E)a beaver

Question

Quizplus · Accepted Answer

A desert environment is characterized by high temperatures and low water availability. Animals in the desert need to conserve water efficiently, and juxtamedullary nephrons allow for the production of a concentrated urine, which helps conserve water. Therefore, natural selection should favor the highest proportion of juxtamedullary nephrons in a mouse species living in the desert.

Natural Selection Should Favor the Highest Proportion of Juxtamedullary Nephrons