Biology 1001A Lecture Notes - Lecture 17: Selfishness, Fetus, Parental Investment
23 Jun 2015
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Lecture 17 : cooperation and conflict: identify the meanings of kin selection, altruism, reciprocal altruism, and eusocial. Kin selection: altruistic behaviour to close relatives, allowing them to produce proportionately more surviving copies of the altruist"s genes than the altruist might otherwise have produced on it"s own. Altruism: a behavioural phenomenon in which individuals appear to sacrifice their own reproductive success to help other individuals. Reciprocal altruism: form of altruistic behaviour in which individuals help non- relatives if they are likely to return the favour in the future. For example, a young guy pup helps rear his four younger siblings. They all share 0. 5 of their alleles, and therefore 0. 5 x 4 = 2 is the amount of allele copies created by proxy : identify why haploidiploidy can favour high levels of cooperation in social insects. Haploidiploidy: a pattern of sex determination in insects in which females are diploid and males are haploid.
