Exam 4: Human Evolution

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How do "lumpers" differ from "splitters"?

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"Lumpers" tend to place more or less similar-looking fossil specimens together in more inclusive groups - they tolerate a great deal of diversity in the group."Splitters" focus on the variation in the fossil record as evidence of distinctive species and tend to argue the existence of a greater number of species.

The first members of the genus Homo appeared around _______________ million years ago.

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What was significant about the Laetoli site in Tanzania?

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The integrating effects of gene flow have become so powerful that dramatic regional variations for suites of traits no longer exist.

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What advantages did humans gain with the control of fire?

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Why does your textbook classify early human ancestors using the genus "australopithecines"?

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Describe the two different hypotheses associated with the modern human origins debate.

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When did Old and New World anthropoid species first diverge?

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Homo habilis is believed to have been overwhelmingly right-handed.

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Give at least 3 examples of the cultural explosion that occurred beginning about 40,000 years ago and is associated with anatomically modern peoples.

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What is continental drift?

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Why does the shape of the pelvis vary between bipeds and other apes?

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How can paleontologists tell whether two sets of bones represent the same or different species?

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The Oldowan tool tradition is primarily associated with what group of early human ancestors?

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_______________ separates humans from other evolving animals.

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Increased meat consumption by our early human ancestors was important for human evolution.

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Neandertals disappeared between:

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Paleontologists who interpret minor difference as evidence of distinctive biological species are called _______________.

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A normal human spine contains only one slight curve inward at the waist.

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Which hypothesis argues that humans originated in Africa some 2 million years ago and that ancient populations throughout the globe are all ancestors of modern humans with unity of a single species maintained through gene flow?

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