LECTURE 27 — Primates & Human Evolution

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7 Terms

1
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What are the synapomorphies of primates?

Large brain, forward-facing eyes, grasping hands, nails instead of claws, and enhanced social behavior.

2
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Which primate is the closest living relative of humans?

The chimpanzee.

3
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Who was Homo habilis?

An early human species associated with stone tools and increased brain size.

4
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Who is Homo sapiens?

The modern human species.

5
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How old are the oldest known Homo sapiens fossils?

About 200,000 years.

6
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Place the following in evolutionary order: bipedal stance, large brain, speech.

Bipedal stance → large brain → speech.

7
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What does it mean that humans are nested in many clades (primate, mammal, synapsid, amniote, tetrapod, etc.)?

Each term identifies a larger ancestral group to which humans belong in evolutionary history.