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Unformatted text preview: 4/15/2010 1 BIOLOGY 101L Classification & Evolution Background info Humans classify things Field devoted to classification = taxonomy Carolus Linnaeus Hierarchial classification: Example of Classification Domain Eukarya Kingdom Animalia Phylum Chordata Class Mammalia Order Primate Family Hominidae Genus species Homo sapiens How do we classify? Physical Characteristics? Shape, size, color, diet, gut, limbs Imagine you have a stack of textbooks: how would you classify them? Alaphabetically? color of binding?, number of pages?, Fictional vs. Non- fictional? etc In-class Exercise Part I Learn how to perform taxonomic classification Use the Caminalcules and work in pairs to classify them into hierarchical system Emphasis Today is on classifying things based on evolutionary relatedness One way to do that is by constructing Phylogenetic trees Trees are constructed from shared derived Trees are constructed from shared derived characteristics Usually based on observable traits or DNA sequences To understand this form of classification you must know something about evolution 4/15/2010...
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