LIFESCI 3C03 Lecture Notes - Lecture 19: Homicide, Ingroups And Outgroups, Psychopathy
5 Apr 2017
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Malthus: populations can only grow to a fixed point. Population outgrows resources at the point of intersection, so population is limited. Altruism struggles to evolve in a viscous population. Primary interaction between actor and recipient causes a secondary effect on the neighbourhood. If actor hurts its own fitness and the population cannot grow, everyone else in the population gets a benefit. It frees resources for others in the population. Any action has an equal or opposite reaction. If actor helps another individual, the neighbours will suffer because resources will be increased for the recipient. It"s like taking the food out of the mouths of everybody else. If the actor is in a homogeneous environment filled with kin, helping one kin would cost other kin. If the recipient moves to a new neighbourhood to inflict the cost on them, Hurt a rival gene in a population filled with gene. Comparison to average of phenotype of individuals in the neighbourhood.
