Textbook Notes (363,420)
Canada (158,366)
Psychology (9,573)
PSYA01H3 (1,196)
Steve Joordens (1,052)
Chapter 3

Chapter 3 study guide

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University of Toronto Scarborough
Steve Joordens

Chapter 3: Evolution, Heredity, and Behaviour The Development of Evolutionary Theory - Biological evolution: changes that take place in the genetic and physical characteristics of a population or group of organisms over time - Darwins theory is used to help understand behaviour - Voyage of the Beagle o Darwin was on a boat o Spent time collecting creatures and objects of every sort - Origin of Species o He reviewed the work of earlier naturalists o Became interested in artificial selection Particular animals are deliberately mated to produce offspring that possess a specially desirable characteristic o Became interested in natural selection The fact that organisms reproduce differentially: within any given population, some members of a given species will produce more offspring than will others - Natural Selection o Natural selection is based on two premises: Individuals within a population show variability in heritable behavioural and physical characteristics The capacity of the environment to sustain a population of any species is limited, producing competition o He studied natural history which convinced him that behavioural adaptations were important to survival and therefore an important part of evolution o Ability of an individual to produce offspring defines that individuals reproductive stress: number of viable offspring it produces relative to the number of viable offspring produced by other members of the same species. o survival of the fittest does not always mean most fit or strongest www.notesolution.com
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