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Unformatted text preview: of organisms based on common ancestry? Phylogeny 5. How are eyes of cavefish (that live in the dark) an example of evolution? The are an example of a vestigial trait. Cavefish cannot see and therefore do not use their eyes, but it is evidence that at one time their ancestor had eyes and could see. 6. D E C B G F A Paraphyletic grouping 7. 2 Arms & Legs Warm Blood Hair Feathers Fish (outgroup) Amphibians 1 Mammals 1 1 1 Birds 1 1 1 0=N 1=Y 0=N 1=Y 0=N 1=Y 0=N 1=Y 2 arms & legs Fish Amphibians Birds Warm blood Mammals Feathers Hair...
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- Spring '08