Psychology 3229A/B Lecture Notes - Mate Choice, Lactose Intolerance, Handicap Principle

• School: Western University
• Department: Psychology
• Course: Psychology 3229A/B
• Professor: Scott Mac Dougall- Shackleton

Document Summary

Types of gene variation that result in behaviour variation. Allelic variation at single gene results in variation in behaviour: mendelian inheritance patterns. Usually determined through controlled breeding experiments (or study family trees) Pattern of inheritance suggests number of genes and alleles involved. Determination of molecular aspects of gene requires further study to identify gene and its regulation. F1 offspring exhibit intermediate trait: many genes, each gene sorts independently. Crosses of different large nest strains result in average size nests. Learning to run a maze has inherited factors. Gene-environment interactions: most traits are polygenic, most genes are pleiotropic. Both evolutionary theory and genetics have advanced tremendously since the modern synthesis. Provides a robust and detiled understanding of evolution and selection. Selection of traits relating to reproduction, rather than survival. Early search and swift location of mates: well-developed sensory and locomotory organs, many insects. Males have larger eyes, antennae and locomotory organs than females.