Lecture 13 Goals

Lecture 13 Goals - class. What two major processes...

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Lecture Goals: Lecture 13 NOTE: WE MAY NOT GET TO EVERYTHING ON THIS PAGE. IF WE DO NOT DISCUSS IT IN CLASS YOU ARE NOT RESPONSIBLE FOR IT Define “adaptive radiation” and explain some of their properties. Provide examples of adaptive radiations from class. What types of organisms fossilize well vs. poorly? List some challenges to obtaining a complete fossil record. List the major events discussed in class from the eras or periods on the geological time scale (you are not responsible for events not discussed in class, but you should know the ones discussed and the names of the eras and periods in which they occurred). Explain what occurred during the Cambrian explosion. Describe the transitional forms and lineages from the fossil record that we discussed in
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Unformatted text preview: class. What two major processes determine the amount of taxonomic diversity? Describe some of the major patterns in changes in taxonomic diversity from 600 million years ago to the present. Explain what Raup and Sepkoski learned about extinction rates from their analysis of 1982. What is a mass extinction? What is the most favored explanation for most mass extinctions? How about the mass extinction at the K/T boundary? How about the current potential mass extinction? Explain what lines of evidence suggest the cause of the mass extinction at the K/T boundary. Describe ways in which humans are responsible for a current rash of extinction events. Distinguish phyletic gradualism from punctuated equilibrium. Describe an example that supports each hypothesis....
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