BIOLOGY 1M03 Lecture Notes - Lecture 3: Group Dynamics, Charles Ii Of England, Mate Choice
18 Oct 2015
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Genetics of inbreeding deleterious alleles are rare carriers are heterozygotes risk of deleterious phenotype increased by inbreeding e. g. florida panthers. Inbreeding avoidance (non-human) many organisms: self incompatibility systems in plants sex specific dispersal inbreeding aversion chimps (female dispersing; age dependent mating); capuchins (muniz et al. Learning and cultural variation in non-humans different behaviours in different populations vocalization: cetaceans, songbirds chimps: termite fishing learned by daughters. Cultural evolution modeling cultural evolution vertical (from parents) horizontal (from others) allows faster (but potentially misguided) evolution spread of selfish memes http://www. quickmeme. com/richard dawkins. Why not? self interest kin selection reciprocal altruism group selection self-interest apparent altruism may be self interest: if an action benefits both you and the group, do it pied wagtails sharing nest defense: both benefit kin selection cooperation among lions & lionesses helps if individual costs are low to start with or turn group behavior to your individual advantage: the selfish herd.
