Chap25New - Phylogenetics Phylogeny_ The evolutionary...

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Phylogenetics Phylogenetics Phylogeny_____ The evolutionary history of a species or group of related species
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Outline Outline Key concepts Binomial Classification categories Three domains and six kingdoms Understanding Phylogenies Examples of Using Phylogenetis Key Terms Conclusions
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Key Concepts: Key Concepts: Phylogeny _____ The evolutionary history of a species or group of related species Systematics Field of biology that deals with the diversity of life. Systematics is usually divided into the two areas of Phylogenetics and Taxonomy . Taxonomy is the science of describing, naming, and classifying organisms Classification is the arrangement of organisms by their physical similarities, which reflect historical and evolutionary relationships
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Key Concepts: Key Concepts: Phylogenetics -- Field of biology that deals with the relationships between organisms. It includes the discovery of these relationships, and the study of the causes behind this pattern
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Binomial Binomial Millions of kinds of organisms exist In 18 th Carolus Linneaus developed modern binomial nomenclature Each species has two unique names – hence binomial Genus Specific epithet Each is italicized or underlined Genus name is capitalized; species name is not
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Texas Bluebonnet Lupinus texensis  / Lupinus texensis
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The Linnean system, first formally proposed by Linneaus in Systema naturae in the 18th century, has two main characteristics. Each species has a two-part name. Species are organized hierarchically into broader and broader groups of organisms. Taxonomy employs a Taxonomy employs a hierarchical system of hierarchical system of classification classification
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Taxonomic Taxonomic Levels Levels Domain Kingdom Phylum Class Order Family Genus Species Here, domestic cat
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Classification Schemes Reflect Scientific Classification Schemes Reflect Scientific Knowledge and Technology Knowledge and Technology 1 Prior to 1970: two-kingdom system Plants and animals 2 1969: Roger Whittaker-five-kingdom system Monera, Protista, Fungi, Plantae, Animalia 3 Recent proposal: Carl Woese-three-domain system Bacteria, Archaea, Eukarya
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How Many Kingdoms?
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This note was uploaded on 05/05/2008 for the course BIO 52030 taught by Professor Zhao during the Fall '07 term at University of Texas at Austin.

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Chap25New - Phylogenetics Phylogeny_ The evolutionary...

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