PSYB30H3 Study Guide - Twin Study, Heritability, Environmental Factor
Document Summary
Behaviour genetics: study of the genetic and environmental contributions to individual differences in personality and behaviour. Human behaviour and personality is an inextricable combination of both genetics and environment. Nature and nurture transact (can work separately, together or may influence one another) Genotype-environment interaction: certain environments have different effects on people depending on their specific genetic makeup (genotype responds differently to an environment) Genotype-environment correlation: it may be impossible to separate effects of genes from effects of environment (genotype is exposed differently to an environment) Phenotype: = genotype + environment + interaction + correlation. Heritability: amount of observed individual differences in some characteristic that can be accounted for by genetic differences (refers to differences across population/group, not a specific person) Impossible to say how much your height is due to your genes but given a group we can say about 80% of height differences is due to differing genes.
