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Chapter12 - "Social Status Society group of individuals of...

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“Social Status” Society - group of individuals of the same species organized in a cooperative manner. Sociobiology - theory that states that social behavior is the result of evolutionary forces. Society is structured by the fitness success that “social genes” confer individuals. Animal societies come in a wide range of shapes, i.e., structures.
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Chapter 12: Kin Selection & Social Behavior
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Social Structures Colonial - organisms live together and share some resources. Quasisocial - the individuals cooperate in brood care, but no true generation overlap. Semisocial - there is generational overlap and taking care of the young. Also, some division of labor Eusocial - reproductive division of labor.
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Sociobiology Field that relates the social behaviors of a species to its evolutionary history Sociobiology takes the perspective that – we are driven by drives that come from our genes’ selfish need to propagate. – we have genetic predispositions to behave in certain ways because our genes are driven to reproduce themselves.
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Social Status & The Sexy Son Hypothesis
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Sociobiology There are genetic predispositions for certain social behavioral patterns. The behavior of helping others, specially offspring, is strongly selected for. Human social behavior is the result of evolutionary processes. Many other “human” behaviors are also predisposed by evolutionary forces.
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Social Interactions and Fitness • Mutualism (Cooperation)…fitness gains for both participants • Altruism …Individual instigating the action pays a fitness cost and the receiver benefits • Selfishness …The actor gains and the recipient loses • Spite …fitness losses for both participants….never witnessed in nature
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Why spite has not evolved? Loss for the actor and recipient would be severely selected against! However, wouldn’t the cost be worth it if the actor imposes a more severe blow to the fitness of the recipient than the damage to their own fitness?
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