LIFESCI 2D03 Chapter 2: Chapter 2 & 8 / Lecture 3
8 Feb 2012
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The process of humans choosing certain varieties of an organism over others by implementing breeding favoring one variety over the other. Basically picking traits for both animals and plants that we find productive for our causes. We can pick for both behaviour and physical traits. Teosinte was the how the corn first looked, then now we have artificially selected for the corn we know today. Any trait that helps the individual survive in their environment and increases fitness. If this trait is heritable then it will be passed down the generations, in turn increasing it"s frequency. Example: hunting behavior amongst wolves, group hunting or individual hunting. If in group hunting the wolf acquires more food, this trait increases fitness and in turn it"s frequency in the generations. Considering an animal"s phenotype is representative of it"s hunting behavior, then the phenotype is a result of it"s phenotype.
