Psychology 2410A/B Lecture Notes - Lecture 2: Phenotype, Fetus, Infant Mortality

• School: Western University
• Department: Psychology
• Course: Psychology 2410A/B
• Professor: Sandra Hessels

Document Summary

Phenotype: behaviour and appearance resulting from genes. Dna: codes for the production particular things in the body like enzymes and proteins. 23 pairs: autosomes: sets 1-22 that don"t determine gender. Mitosis: cell divides into 2 genetically identical cells. Make them really interesting test subjects for nature vs. nurture: dizygotic (fraternal) Share the same amount of genetic material as regular siblings. Range of reaction: any particular genotype sets limits on the range of possible phenotypes a person might display in a certain environment. Canalization: genes limit the development course of certain characteristics. Built into everyone, like how everyone learns to walk (unless there is something physically wrong). Polygenic inheritance: traits determined by an interaction of multiple genes. X-linked inheritance: traits determined by genes on the x chromosome only. Genetic mutation: sudden change in the genetic material that occurs due to an error in the gene replication process.