BIOL 306 Lecture Notes - Lecture 28: Little Albert Experiment, Pleiotropy, Reverse Genetics
9 Jan 2018
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Document Summary
Dog are bred to obtain certain traits (both physiological and behavior/personality) Most traits are not discrete (height, continuous trait) Selecting the higher portion of population , if the factors are genetic, the offspring should also be tall, if the factors are environment, the offspring will be exposed to same environment as parents and show normal distribution height. Results: children are taller than the population average, but not as high as parent means. E. g. simplex as heterozygotes (proved to be wrong later) The test questions are highly cultural biased, and language biased. E. g. the amount of time rats running on the wheel. The idea that people can be made by environments, later morphed into rejection of genetics. Resulted in lack of study in agriculture and famine in soviet union. Each gene only contribute a little bit into the phenotype, hard to study. Reverse genetics, study a known gene and it"s phenotype.
