Darwin's finches provide a classic example of the processes of evolution. Scientists have concluded that Darwin's finches evolved from a South American ancestor The Galapagos Islands are located approximately 100 km west of South America. These islands were never connected to the South American mainland or to each other. Scientists think that a small number of birds from the ancestral species must have either gotten lost or been blown to the islands by a storm This original population then evolved on the islands, where there are many different niches and food sources. Which of the following questions would a scientist most likely ask to determine whether various finch populations belong to one species?