PSYC 111 1st Edition Lecture 5 Outline of Last Lecture I Data Collection Methods II Statistics III Special Considerations for Psychology Experiments IV Genetics Outline of Current Lecture II Ways That Genes Effect Behavior III Polygenic Effects IV Evolution Current Lecture I Ways That Genes Effect Behavior One way that genes can effect behavior is through the dominant and recessive genes The dominant gene is able to be affected by Huntington sDisease which is a muscular disease which leads to mental decline The recessive gene is receptive to PKU which is an autosomal recessive disorder The sex linked genes are responsible for redgreencolorblindness in men and is when the locus is on the x chromosome and missing on the y chromosome Lastly we have autosomal abnormality which is responsible for Trisomy21 also known as DownSyndrome which is when the 21 gene pair has 3 chromosomes instead of 2 II Polygenic Effects One polygenic effect that is studied is height in humans which is due to genes but also nutrition and other values A psychological trait is intelligence which is exemplified by Tryon s rat research which studied selective breeding The rats were divided into bright and dull rats based on how fast they made it through a maze and then it was studied how the rats breeded if they smart rats breeder with only smart rats Galtive s research These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute dealt with twins and adoptive research and studied two children one genetic and one adopted and how many traits they retained from their parents Schizophrenia was also studied as a genetic trait where a danish study was done to take an adopted child track down their parents interview and study the parents biology and if the parents were schizophrenic then the child was more likely to be schizophrenic III Evolution Evolution is the interaction of genes and the environment over time The roles of evolution in the human community are biological adaption individual adaption and cultural adaption Two scientists who are critical to the understanding of evolution are Mendel and Lyell Evolution is not a teleology and it is not a process of things better and better In evolution trends in one direction can shift back the other way should environmental conditions change Lastly organisms are not higher and lower depending on how much change has occurred Behavior is susceptible to evolution just as physical characteristics are
View Full Document
Unlocking...