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Steve Joordens (1,048)

Psych Reading Notes- 3.1.doc

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University of Toronto Scarborough
Steve Joordens

3.1- Genetic and Evolutionary Perspectives on Behavior Martie Haselton- Evolutionary Psychologist - studies how human behavior has evolved to solve problems relating to survival and reproductive sucess - success in attracting a mate - theory that clothes people choose are related to sexual motivation - women dress better when in peak level of fertility of menstrual cycle *nature and nurture lie along a continuum, some traits subject to greater influence from genes while others are more environmentally based - genes are experience are never independent; they interact with each other Genes: basic units of heredity; responsible for guiding the process of creating the proteins that make up physical structures and regulate development and physiological processes throughout lifespan Chromosomes: structures in the cellular nucleus that are lined with all of the genes an individual inherits - humans have ~ 30,000 genes, distributed across 23 pairs of chromosomes DNA (deoxyribonucleic acid): molecule formed in a double-helix shape that contains 4 animo acids; adenine, cytosine, guanine and thymine. - genes instruct cell how to behave, which type of molecules to produce and when to produce them Genotype: genetic make up of an organism Phenotype: consists of observable characteristics, including physical structures and behaviors - genotype represents what was inherited - phenotype represents physical and behavioral manifestation of the genotype through interactions with the environment Behavioral Genetics: study
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