Biology 1001A Chapter Notes - Chapter 47: Haplodiploidy, Cortisol, Stepfamily
3 Apr 2016
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47. 12 social behaviour: social behaviour are the interactions that animals have with other members of their species, different kinds of interactions: individual until to reproduce, groups, large social units. 47. 12b group living has its costs and benefits: High levels of cortisol and stress hormones: sub ordinance: can rise to become dominant, benefits include: having protection, gaining experience. 47. 13 kin selection and altruism: helping genetic relatives preserves genes because family members share same alleles from ancestors. Multiply probabilities and add: helping raise siblings with 0. 5 of same dna has the same influence of reproducing, often when inexperienced parents are not very successful at reproducing on own and can gain experience. Suggests longer lived species have developed cooperative behaviour. Eusocial: genetically related individuals (mostly sterile workers) live and work together for the reproductive benefit of a single queen and her mate(s). 47. 15 human social behaviour: both humans and chimpanzees in very unstructured groups.
