Biology 1001A Lecture Notes - Lecture 16: Selfishness, Fetus, Inclusive Fitness
10 Nov 2016
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Document Summary
Advantages and disadvantages of living in a group. Groups of predators cooperating together are more efficient in hunting (ie. they capture prey more effectively) Groups of prey can detect predators better when in a group. Can also disperse the predators so no individuals in the group are at less risk of being attacked than if they were alone. Costlier to live in groups increased competition for food. Can also spread diseases and parasites more rapidly. Meaning of dominance hierarchy, kin selection, altruism, reciprocal altruism, eusocial, haplodiploidy. Dominance hierarchy: some individuals in groups dominate over others (i. e. alpha male) Dominance can be absolute (one individual has dominance over every resource) or relative (certain individuals have dominance for certain resources, while other individuals have dominance for other resources) Kin selection: individuals are more likely to help close relatives survive because they share some of their alleles and so their alleles would propagate and be passed on to the next generation of offspring.
