Bipedalism - to beat swifter animals Early Warning...

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Bipedalism Primates Knuckle walkers Cannot extend knees or lock legs; instead, use muscle power to support body weight—more tiring Do not have thigh bones that slope inward stand/walk with legs far apart. Humans Walk on two legs, vertically Can lock legs straight Human’s high bone slopes inward from the hip to the knee, making our feet under our center of gravity Well developed (Evolution: Library:
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Darwin’s Hunting Hypothesis & Theories of Bipedality Energy Efficiency Hypothesis : ability to have more endurance in hot weather
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Unformatted text preview: to beat swifter animals Early Warning Hypothesis : Stand up to see upcoming predators Threat Display Hypothesis : large groups need the alpha-male. Being able to stand up tall was an advantage in social groups Male Provisioning Hypothesis : reproductive fitness (males only) developed; was not seen when females feed upright Postural Feeding Hypothesis : being able to get food standing up, instead of constantly reaching up allowed energy efficiency Functional Body Hair Hypothesis : maximum surface area exposed allows (Neill 2011)...
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This note was uploaded on 01/06/2012 for the course ANT 250 taught by Professor Dawnneill during the Spring '11 term at Cal Poly.

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Bipedalism - to beat swifter animals Early Warning...

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