Biology 1202B Lecture Notes - Lecture 3: Microevolution, Thomas Hunt Morgan, Genetic Drift
23 Aug 2016
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Document Summary
The combination of a genetic-based change and strong selective pressure can alter the population over time. Human interference can result in evolution by natural selection. Biological evolution gradual change of population or organisms over time (measuring time in generations rather than years) Evolution occurred in the past and still continues to occur. Not all gradual change (eg. natural aging) is evolution. Aristotle believed inanimate objects and living organisms had fixed characteristics. Aristotle created a ladder-like classification of nature from simplest to most complex based on similarities and differences; minerals, plants, animals, humans, gods. At the time thought everything was created by god and therefore could not change or become extinct or new kinds arise (natural theology) Aristotle"s ladder of life was called the scala naturae"/"great chain of being". Sir francis bacon established the importance of observation, experimentation and finding evidence to support a proposal/theory (inductive reasoning)
