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Organizing Life's Diversity

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Question
Answer
Classification   The grouping of organisms based on a set of criteria that helps organize, communicate, and retain information.  
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Taxonomy   A discipline of Biology primarily concerned with identifying, naming, and classifying species based on natural relationships.  
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Binomial Nomenclature   Linnaeus's system of naming organisms which gives a scientific two word Latin name to species- the first being the genus name and the second being the specific epithet.  
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Classification Hierarchy   Kingdom, Phylum, Class, Order, Family, Genus, Species  
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Domain   The broadest of all of the taxa; contains one or more kingdoms.  
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Ancestral Character   Traits that two species share because of common ancestry.  
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Derived Character   Traits that evolved in one species after it branched off from others.  
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Outgroup   A species or group of species closely related to but not included within a taxon.  
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Phylogeny   The evolutionary history of a species  
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Cladogram   A branching diagram that represents the proposed evolutionary history of a species or group  
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Archae   Any of the unicellular microorganisms that is genetically distinct from bacteria and eukaryotes, and often inhabiting extreme environmental conditions.  
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Bacteria   Microscopic prokaryotes. Most are benficial to humans and to the environment, but a small percentage can casue disease.  
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Eukarya   The domain comprised of eukaryotes or organisms whose cells contain a true nucleus.  
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Archaebacteria   Prokaryotes whose cell walls do not contain peptidoglycan.  
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Eubacteria   Prokaryotes whose cell walls contain peptidoglycan.  
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Protista   A taxonomic kingdom comprised of protists, characterized by being eukaryotic and mostly single-celled  
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Plantae   The taxonomic kingdom comprising all living or extinct plants.  
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Fungi   A (taxonomic) group that includes heterotrophic eukaryotes that are usually filamentous, devoid of chlorophyll, with chitinous cell wall, and produces spores.  
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Animalia   Taxonomic kingdom comprising all living or extinct animals.  
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Taxon/Taxa   Any group or rank in a biological classification into which related organisms are classified.  
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