PSYC 3100 Lecture Notes - Lecture 2: Pleiotropy, Allele, Fallacy

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3100
• Professor: Pat Barclay

Document Summary

Trait must increase reproductive success - if it doesn"t it wont evolve. Survival impacts reproductive success - anything increase survival increase reproductive success - but survival is not enoughneed offspring. Must maximize bene t to cost ratio relative to alternatives- for something to spread must be better than the alternatives - doesn"t need to be the best. Example big brains has bene ts but has costs - trait involved needs to maximize that ratio. Must be good that speci c environment - not trait is always good (eating meat- good trait in lion) That guy - the guy who does not sacri ce himself - cooperators can do better than non cooperators - !2: nature vs nurture - people assume that these two are mutually exclusive, in reality nature and nurture work together and must work together, they need each other - bidirectional !!!!! Phenotypes- observable traits (observable- anything u see smell taste etc)