PS263 Chapter Notes - Chapter 4: Twin Study, Kin Selection, Heritability
Document Summary
The extent to which different variations in some characteristic depend largely on genetic differences. To determine heritability of any characteristic researches mainly rely on 3 kinds of evidence: sibling studies, adopted children studies, identify specific genes linked to some behaviour. Firmer conclusion = more than one type of evidence supports it. Evidence for significant heritability of almost every behaviour except religious affiliation. A gene for ___ ex brown eyes does not mean the gene directly produces brown eyes but produces a protein that makes the eyes brown. Someone w genes that makes them attractive = strangers smile. People want to get to know you = their reactions to your appearance will change your personality. Thus genes altered your behaviour by altering your environment. Evolution is a change over generations in the frequencies of various genes in a population. Choosing individuals with desired trait and making them parents of next generation.
