GEO 102 Lecture 20 Outline of Last Lecture I Fossils and Evolution Outline of Current Lecture II Evolution Fact and Theory III Modern Synthesis IV The Basics Current Lecture Evolution Fact and Theory Evolution is change over time o Seen in geologic record Natural selection explains evolution o Also explains diversity of present life o Darwin and Wallace s theory had competitors o Since Darwin it has been expanded to be the modern synthesis Modern Synthesis Natural selection Genetics Plate tectonics Radiometric dating New fossil data Emergence of new species and viruses Computer modeling The Basics Decent with modification All life varies genetically within a population Genetic traits are inherited through reproduction Individuals with traits favorable for survival and reproduction pass on their genes Far more organisms are born than survive to reproduce Who survives is not random 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 Those traits help reproduction and survival persist Small change is observed between generations Over time large changes develope
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