PSY230H5 Lecture Notes - Lecture 7: Cultural Psychology, Phenylketonuria, Chinese Canadians
Document Summary
Genotype: an individual"s set of genes from the total gene pool. Phenotype: the observable characteristics of an individual (e. g. , physical characteristics, personality traits). Heritability: an estimate of the variance that individual differences in genotypes explain in individual differences in. Indirect evidence: traditional approach based on twin, family, and adoption studies more reliable. Modern approach based on measurement of genetic markers (ex. Behavioral genetics: heritability have lots of valid and reliable results with this method, variance in phenotypes. If we measure of height of everyone in class: we would get a variance of difference in height. Genotype, environment and phenotype diagram** h = heritability = genetic influence on phenotype identifies how much your genes exert a causal impact on your height. h2 = heritability coefficient. Since we share genes with family members we can use that relatedness to see the variance in genotypes and how it relates to phenotypes: 2 factors, heritability (genes) 50% shared genes.
