Examine the Evolutionary Tree

question 43

Multiple Choice

Examine the evolutionary tree.The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present;the vertical axis represents nothing in particular.The labeled branch points on the tree (V-Z) represent various common ancestors.Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species,and only the tips of the lineages on this tree represent distinct species.

-Which pair would probably have agreed with the process that is depicted by this tree?

• A)Cuvier and Lamarck
• B)Lamarck and Wallace
• C)Aristotle and Lyell
• D)Wallace and Linnaeus

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