[Campbell Biology P.22] Based on the text in Unit 4 and Figure 23.19, "Lack of variation in... | Practice Question

Based on the text in Unit 4 and Figure 23.19, "Lack of variation in a population can limit adaptation," what is the most likely consequence for snowshoe hare populations that have not adapted to ongoing climate change?

  • A: They will successfully migrate to new habitats to avoid climate change effects.
  • B: They will experience increased mortality due to being poorly camouflaged in their changing environment.
  • C: They will rapidly develop new genetic mutations to enhance their camouflage.
  • D: Their population numbers will remain stable as existing adaptations are sufficient.

Explanation

The Unit 4 text explains that snowshoe hare populations have not adapted to ongoing climate change, causing them to be "poorly camouflaged in early winter and leading to increased mortality." This directly supports option B. Figure 23.19 further emphasizes that "Lack of variation in a population can limit adaptation," which is the underlying reason for their inability to adapt and survive.