[Campbell Biology P.1047] In which of the following species would natural selection most stro... | Practice Question

Explanation

Juxtamedullary nephrons have long loops of Henle that extend deep into the renal medulla, enabling the kidney to produce highly concentrated urine and reabsorb a maximum amount of water. Animals living in arid environments, such as deserts, face severe water scarcity and thus benefit most from adaptations that enhance water conservation. Therefore, natural selection would favor a higher proportion of juxtamedullary nephrons in desert-dwelling species like a desert mouse.