PSYC18H3 Lecture Notes - Lecture 2: Thomas Robert Malthus, Sexual Selection, Uniformitarianism
Document Summary
There are people that came before darwin that influenced him. Certain traits can advantages in any given environment. Those particular traits can help those individuals survive better. Believed that those traits can develop and be inherited throughout the lifespan e. g. if you get really strong throughout the life span can be passed down to their offspring. You can inherit phenotype adaptation to the environment. Uniformitarianism ever-changing: earth is shaped by forces that are still present today; earth is. Pop grwth is kept in check by various vices. Pop grows, but if there weren"t certain things like death, disease, etc then earth wouldn"t be able to handle it. Said that the smartest, stronger individuals are more likely to survive through these vices led darwin to come up with survival of the fittest (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Natural selection: there is genetic variation in among each species. Phenotypes are observable: selection pressure must be present.