BIOL 206 Lecture Notes - Lecture 1: Macroevolution, Microevolution, Phenotypic Plasticity
25 Aug 2016
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Document Summary
Through time, an organism can change: evident through selective breeding, also known as artificial selection. Purpose is to exam population and choose to breed individuals with the most desirable trait. One big example is the artificial breeding of dogs from wolves. Through time, wolves were bred into what we know as dogs. Many different variations of dogs now a days due to artificial breeding. Microevolution: changes in gene frequencies and trait distributions that occur within populations and species: important because it alters the nature of many organists, human interaction with different organisms may influence how our own population evolves. Natural populations can change with time, evident in many organisms from plants to animals. Vestigial structures: defined as a useless, reduced, or rudimentary version of a body part: appendix for example, can be structures at the physiological and molecular level, not only based on anatomical level. 2. 2: evidence of speciation: new lineages from old.
