The graph below shows the average tail length of a population of deer mice. The first graph shows the tail length of the mice while living in a prairie ecosystem, and the second shows the tail length many generations after a group of mice moved into a forest ecosystem. Which of the following types of natural selection describes this scenario, and what conclusion could you draw from these data?
Stabilizing selection: shorter-tailed mice had increased fitness in the forest ecosystem.
Stabilizing selection: longer-tailed mice had increased fitness in the forest ecosystem.
Directional selection: shorter-tailed mice had increased fitness in the forest ecosystem.
Directional selection: longer-tailed mice had increased fitness in the forest ecosystem.