PSYC 2130 Chapter Notes - Chapter 9: Twin, Prefrontal Cortex, Dopamine Receptor D4

• School: York University
• Department: Psychology
• Course: PSYC 2130
• Professor: Krista Phillips

Document Summary

Can personality traits be passed down through our genes. Eugenics belief that humanity could improve thought selective breeding. Cloning belief that it might be technologically possible to produce a complete duplicate of a human psychologically and physically. May lead people to believe that intelligence, poverty, criminality, mental illness, and obesity can be fixed through genes. Personality is a complex interaction between genes and environment chances of duplicating are slim. Phenotype the observable traits of a person. Identical twins monozygotic come from one egg. Fraternal twins dizygotic come from 2 eggs no more genetically related then siblings. All humans are 99% alike focuses exclusively on aspects of personality that differ from. Heritability coefficient reflects the amount two people are genetically alike. Average heritability of traits is . 40 behavior variance that can be explained by genetic one person to another variance is 40%