PSY 12000 Lecture Notes - Lecture 4: Sickle Cell Trait, Quantitative Trait Locus, Behavioural Genetics

• School: Purdue University
• Department: Psychology
• Course: PSY 12000
• Professor: George Hollich

Document Summary

Dominant vs recessive: dominant when the presence of that gene means it happens. Case in point: sickle cell trait the recessive sickle gene provides resistance to malaria. Single gene inheritance: heterozygous one of each (aa, homozygous both the same (aa or aa) Behavioral genetics: behavioral genetics is the branch of genetics that deals with the inheritance of behavioral and psychological traits. From genes to behaviors: genes affect behavior indirectly, maybe very indirectly, the gene for popularity, the impact of genes on behavior depends on the environment. Changing relations between nature and nurture: passive gene-environment relation: parents provide genes and environments, evocative gene-environment relations: phenotypes evoke different responses, active gene-environment relations: children actively seek environments that match their genetic makeup niche-picking. The nature of nurture: siblings are not much alike. Why: family environments affect each child differently, evocative and active reactions lead to non-shared environmental influences.