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Evolutionary Hypotheses: Sharks and Ray-finned Fish Phylogenies

Explore and analyze phylogenies of vertebrates to determine the accuracy of grouping sharks and ray-finned fish together in a clade. Consider evolutionary relationships and evidence for each hypothesis.

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Evolutionary Hypotheses: Sharks and Ray-finned Fish Phylogenies

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  1. Understanding Evolution: Minute paper Write a short response to the following question: The phylogenies below show two hypotheses regarding the relationships among vertebrates. The phylogeny on the right groups sharks and ray-finned fish together as a clade, and the phylogeny on the left does not. Which hypothesis do you think is more likely to be accurate and why?

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