Term
| Meat eating changes to gut and brain |
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Definition
| Meat eating seems to make brain larger while making the stomach smaller. |
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Term
| More seasonal climate in pleistocene meant that selection: |
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Definition
| favoured individuals who could adapt to different types of food depending on season. |
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Term
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Definition
Pan hunts and eats meat occasionally.
Austro. eats very little meat.
Homo eats a lot of meat.
Correlation? |
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Term
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Definition
Australopithecines were EXTREMELY sexually dimorphic, almost as much as today's gorillas. high competition for mates?
Homo less sexually dimorphic - monogamy? |
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Term
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Definition
Longer gestation in humans (in womb) means larger brains at birth. Longer life.
-In a. aferensis, very little brain growth from birth to death. Grew as fast or faster than apes. Humans grow much more slowly.
Birth difficulty: wider opening/smaller baby head (brain) for austra. and pan as opposed to homo.
DIfficult to reconstruct. |
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Term
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Definition
| in humans, evolution pushes for larger brains while also pushing for narrower pelvises (bipedalism). |
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Term
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Definition
Austra. = more ape-like development
Homo - human development is much slower than austra., although development is unclear due to a lack of baby fossils.
Austra. are therefore led an intermediate life between pan and homo. |
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Term
| putting it even more together! |
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Definition
austra - bipedal walking, no running. vegetarian (mostly), polygamous, fast development. "biped ape".
Homo (ergaster) - Walking AND running. meat eater. Monogamous (mostly). Slower life history, but faster than humans. "Fast-living proto-human?" |
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