​Alligators More Closely Resemble Lizards Than Birds; However, Alligators and Birds

question 81

Multiple Choice

​Alligators more closely resemble lizards than birds; however, alligators and birds have four-chambered hearts, which lizards do not have. In this example, the four-chambered heart is a ____, which indicates that alligators are ____ related to birds than to lizards.

• A) ​derived character; more closely
• B) ​key innovation; more closely
• C) ​derived character; more distantly
• D) ​key innovation; not
• E) ​homologous structure; more distantly

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