06 lecture Jan 31

06 lecture Jan 31 - Evolutionary biology in the news...

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1 Evolutionary biology All living things can be classified in groups Darwin’s tree of life theory explains why The meaning of theory in science Good alternatives to Darwinian theory? Testing tree of life theory Pre-evaluation: Drop off your written comments in box up front after class Do not put your name on your comment sheet Felis sylvestris lybica Felis catus Evolutionary biology in the news If this slide is supposed to illustrate convergence, there are at least _______ genera above. A. 1, B. 2, C. 3, D. 4 If this slide is supposed to illustrate convergence, there are at least 2 genera above. Genus: Moloch Family: Agamidae Genus: Phyrnosoma Family: Iguanidae
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2 Why are there so many species with shared peculiarities? Darwin’s tree of life theory as a diagram Tree of life theory is based on an analogy with family trees Tree of Life Assumption: Descendants retain inherited traits of their predecessors A hypothesis derived from tree of life theory
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3 Eubacteria: Single celled, no nucleus or organelles Escherichia coli : A species in the human digestive tract Four species of Archaea that live in deep sea vents Archaea: Single- celled,no nucleus, but genetically different from bacteria Habitat favored by Archaea “Prokaryotes”
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This note was uploaded on 04/02/2008 for the course BIO 187 taught by Professor Douglasgreen during the Spring '07 term at ASU.

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06 lecture Jan 31 - Evolutionary biology in the news...

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