Question

galapogos tortoises have a number of shell variations, shown right. what are the advantages of choosing a system examining the beaks of finches instead of the shells of tortoises? check all that apply. birds have shorter lifespans, making generations shorter. the bird population is likely much greater, allowing for more data. tortoises move too slowly for natural selection to influence shell phenotype. birds are easier to track and monitor. saddleback shell domed shell intermediate shell photos by mike weston

Explanation:

• Shorter finch lifespans mean researchers can observe evolutionary changes across multiple generations in less time than with long-lived tortoises.
• Larger finch populations provide a larger sample size, leading to more statistically robust data for evolutionary studies.
• Tortoises' slow movement does not prevent natural selection from acting on their shells; shell variations are already evidence of natural selection in tortoises, so this is incorrect.
• Finches are more mobile and observable in their habitats, making them easier to track and monitor for research compared to the slower, more elusive tortoises.

Answer:

A. Birds have shorter lifespans, making generations shorter.
B. The bird population is likely much greater, allowing for more data.
D. Birds are easier to track and monitor.