BIOLOGY 1M03 Lecture Notes - Lecture 12: Haplodiploidy, Chromosome, Hymenoptera
11 Aug 2018
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Goes against natural selection: v. c wynne edwards view of life- epidictic displays- allows birds census the population, if too many birds in birds in habitats they wont reproduce, too many birds, not enough food: forego breeding. Selfish first do best: without controls or consequences, cheaters do best, certain jay birds help other birds lay eggs, help protect little birds and feed, this is costly, this is a altruistic behaviour. This birds are siblings, helping their genes. Protecting relatives, protecting genetic makeup: darwin struggled to explain sterile worker bees and ants (he was on the right track, thinking about families) Hamilton"s rule: an individual should help another when the following inequality is met: rb>c, where: B is the darwinian fitness benefit to the recipient (how many of the genes passed on) C is the darwinian fitness cost to the donor (hoe much am i risking myself, dying and not passing on gene or exhausting and not taking care of offspring)
