Feb_3_lecture

Feb_3_lecture - Can fossils tell us anything about the...

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February 3, 2010 Chapter 25 Some important terms parsimony classification phylogeny reduction reactions oxidizing reactions protobiont ribozyme (NOT ribosome) Major concepts covered in lecture 1) Experimental approaches to how life arose on Earth Oparin-Haldane Theory Miller-Urey Chech –Altman 2) Earth is very old How old are the oldest fossils found to date? What type of organism are these fossils What is a eukaryote? What makes them distinctive from other organisms (ie bacteria)? What hypothesis aims to explain how eukaryotes first arose?
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Unformatted text preview: Can fossils tell us anything about the atmosphere on earth? 3) Not all fossils are the same How do fossils form? How do these fossils that result from these processes differ? What do fossils tell us about origin of life on earth? Fossils can inform scientists about major climatic changes on early Earth 4) Phylogeny & classifying life on Earth Five Kingdoms of life Phylogenetic analyses have dramatically changed our views of the classification of life. Image adapted from N. Pace (1997), Science 276: 734-740...
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Feb_3_lecture - Can fossils tell us anything about the...

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