Textbook Notes (363,306)
Canada (158,323)
Psychology (9,573)
PSYA01H3 (1,196)
Steve Joordens (1,052)
Chapter 3

Chapter 3 Notes for Midterm

6 Pages
Unlock Document

University of Toronto Scarborough
Steve Joordens

PSYA02Fall2011 Chapter 3 Evolution Heredity and Behaviour The Development of Evolutionary Theoryo Biological evolution changes that take place in the genetic and physical characteristics of a population or group of organisms over timeo Adaptive significance the effectiveness of behaviour in aiding organisms to adapt to changing environmental conditions o A complete understanding of any behaviour requires that we understand both the past and the present conditions which influence it o Ultimate causes evolutionary conditions that have slowly shaped the behaviour of a species over generations o Proximate causes immediate environmental events and conditions that affect behaviour o Ex male gerbils that develop next to brothers in the womb are around high levels of testosterone secreted by their brothers therefore grow up to be interested in females and mate and have many more of his kinds while gerbils that develop next to females usually do not mate and if they do mate they have very few babiesbut when they did have babies they were better parents which is why natural selection has not weeded out this kind of males o Culture the sum of socially transmitted knowledge customs and behaviour patterns common to a particular group of peoplehistory and evolution must be looked at in order to understand where all this transmitted knowledge originates from The Voyage of the Beagle o During his 5 year voyage on the Beagle Darwin observed the fauna and the flora of South America Australia South Africa and the islands of the Pacific South Atlantic and Indian oceans including the Galapagos Islandshe collected creatures and objects which were sent back to England and analyzed by naturalists from all over Europe The Origin of Species o Darwin became interested in artificial selection when he came back from his voyage o Artificial selection a procedure in which particular animals are deliberately mated to produce offspring that possess especially desirable characteristics o Natural selection the consequence of the fact that because there are physical and behavioural differences among organisms they reproduce differentiallywithin a given population some animals the survivors will produce more offspring than other animals will which lack the favourable characteristic Natural Selection o Species change over time common from a common ancestor evolution is continual with gradual changes and is based on natural selection o Reproductive success the number of viable offspring an individual produces relative to the number of viable offspring produced by other members of the same speciesVariation o Variation the differences found across individuals of any given species in term of their genetic biological and psychological intelligence sociability behaviour characteristicso Genotypes and phenotypes are responsible for variation 1
More Less

Related notes for PSYA01H3

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.