PSYCH 2AA3 Lecture Notes - Lecture 2: Kk Mzt Skopje, Serotonin Transporter, Behavioural Genetics
2 Apr 2016
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Document Summary
Genes and environment work together and affect one another: epigenetics. Genotype (inherited genes) and phenotype (observable representation of genes: ex. height (may be shorter because malnutrition early in life, environment/experiences can change genotype, can pass these changed genotypes onto offspring, natural selection, psychiatric disorders (caspi et. Expression of serotonin transporter gene when very stressful events occur predictor: intelligence (cooper & zubek, 1958) Can you breed rats who are smart and dumb. Took best and worst of rats and interbred. Some raised in regular environments, others in impoverished environments, others in enriched environment. Impoverished rats decreased in maze running ability and vice versa. Is there a gene" for attribute x: polygenic (multigenic) inheritance. Many genes involved: can"t identify all genes. Can we disentangle the effects of genes and environment on polygenic traits: three methods. If child is more similar to biological, genes more important. If more similar to adoptive, environment more important.
