Concept explainers
Consider the experiment described in Section 2.1 in which Ted Garland and colleagues bred mice to run long distances on exercise wheels. We presented the results as evidence that two dozen generations of selective breeding had altered the experimental population. How does the control strain support this interpretation? If Garland had simply compared the behavior of the 24th experimental generation to the behavior of the first experimental generation, would the evidence for evolution be as strong? Explain.
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