17.1 The Linnaean System of Classification

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17.1 The Linnaean System of Classification

Linnaeus Naming System Still used today. Taxonomy - the science of naming and classifying organisms A standard way to refer to species and organize the diversity of living things. Taxon - a group of organisms in a classification system

Scientific Names Binomial nomenclature - a two-part scientific naming system. uses Latin words scientific names always written in italics two parts are the genus name and species descriptor

Scientific Names cont. A genus includes one or more physically similar species. Species in the same genus are thought to be closely related. Genus name is always capitalized. A species descriptor is the second part of a scientific name. always lowercase always follows genus name; never written alone

Cougar – Felis concolor Tiger - Panthera tigris Lion - Panthera leo Kitten – Felis domesticus First letter of the genus is capitalized Genus and species are always italicized OR underlined if hand written First letter of the species is lowercase

7 Levels Each level is included in the level above it. Levels get increasingly specific from kingdom to species. DKPCOFGS Dumb King Phillip Came Over From German Soil

The Linnaean classification system has limitations. Linnaeus taxonomy doesn’t account for molecular evidence. The technology didn’t exist during Linneaus’ time. Linnaean system based only on physical similarities.