Which change would be most likely in a species of frog that has been artificially selected for greater swimming endurance?

Question

Quizplus · Accepted Answer

Artificial selection for greater swimming endurance would likely lead to an increase in aerobic ATP production, as this is the energy system used for sustained activity such as swimming. Anaerobic ATP production is used for short bursts of activity and would not provide the necessary endurance for swimming. Increased maximum swimming speed is not necessarily correlated with endurance, and increased fatigue would be counterproductive to swimming endurance.

Which Change Would Be Most Likely in a Species of Frog