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 a desert
E) a beaver

Question

Quizplus · Accepted Answer

Juxtamedullary nephrons are specialized for water conservation, making them advantageous for animals living in arid environments, such as a desert. This is why a mouse species living in a desert would likely have the highest proportion of these nephrons, to efficiently manage water and survive in conditions where water is scarce.

Natural Selection Should Favor the Highest Proportion of Juxtamedullary Nephrons