[Campbell Biology P.51] Based on the information provided, what is the primary reason for t... | Practice Question

Based on the information provided, what is the primary reason for the light, dappled fur color of the beach mouse Peromyscus polionotus compared to the darker fur of inland mice of the same species?

  • A: Their diet consists mainly of light-colored sand and seashells.
  • B: The light color helps them regulate body temperature in sunny beach environments.
  • C: It allows them to blend into their brilliant white sand dune habitat, providing protection from predators.
  • D: Light fur is a dominant genetic trait in beach mouse populations, regardless of habitat.

Explanation

The Figure 1.1 caption and the 'Evolution' section explicitly state that the light, dappled color of the beach mouse allows it to blend into its habitat brilliant white sand dunes to provide protection from predators. This is a classic example of natural selection leading to adaptation.