Scientific Views Are Based on Evidence Rather Than an Appeal

question 13

Multiple Choice

Scientific views are based on evidence rather than an appeal to authority. Which of the following statements demonstrates a conclusion based on an appeal to authority?

• A) We conclude that lungs evolved before swim bladders because a study of branching patterns show that some of the oldest lineages of Osteichthyes have lungs.
• B) We conclude that lungs evolved before swim bladders because Darwin wrote that swim bladders evolved before lungs in The Origin of Species.
• C) We conclude that lungs evolved before swim bladders because the oldest osteichthyan fossils show lungs arising before swim bladders.
• D) We conclude that lungs evolved before swim bladders because Hox genes direct the evolution of swim bladders but not of lungs.

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