AN1_Quiz4_Answers - ANTHROPOLOGY 1 - Quiz 4 - Acceptable...

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ANTHROPOLOGY 1 — Quiz 4 — Acceptable Answers 1. “All other things being equal?” Describe a social, environmental or physiological condition that a. is likely to promote polygyny: Social: males reproduce better by competing for copulation that caring for their offspring. Environmental: females can find sufficient food and protection to raise their young on their own. Physiological: females have physiological adaptations (e.g. lactation) that bias them toward high investment in offspring making it possible to rear them without help. b. is likely to promote monogamy: Social: males reproduce better by caring for their offspring that competing for copulation. Environmental: females cannot find sufficient food or protection to raise their young without assistance from another. Physiological: females and males don’t differ too much in any physiological adaptations (e.g. ability to find food, defend young) that would bias them toward higher investment in offspring than the other sex; AND neither sex alone has adaptations making them capable of successfully raising offspring alone. 2. Under what conditions is a helper at the nest strategy most likely to evolve?
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This note was uploaded on 02/07/2012 for the course ANTHRO 1 taught by Professor Wilkie during the Spring '08 term at University of California, Berkeley.

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AN1_Quiz4_Answers - ANTHROPOLOGY 1 - Quiz 4 - Acceptable...

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