lecture7 - Life Science 15 Concepts and Issues Lecture 7...

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Life Science 15: Concepts and Issues Lecture 7: Kindness to our kin 1/31/12 I. Intro to kin selection: fitness vs. inclusive fitness II. Hamilton’s Rule III. Relatedness IV. Kin recognition Australian social spiders: increase reproductive success by allowing her babies to suck her dry and kill her- so that they can live Q: Why is these so much kindness in the world? And could we engineer bit more cooperation when needed? Developing our theory of kindness: - Kindness: 1. shared genes 2. reciprocity (likely to see favor returned) 1. Because gene X in you causes you to act in such a way that you increase the reproductive success of other individuals that carry gene X. (Shared genes/ Kin selection) 2. Because gene Y in you causes you to help other people who will return the favor, thereby benefiting gene Y. (Gene Y buffers itself from an uncertain future by storing goodwill in others.) (Reciprocal Altruism) Genes are instructions for how to build the body, including the brain structures that give you pleasure and pain, and motivations to do (or not do) things.
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