Classification (p.447-450)

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Classification (p.447-450)
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Why Do We Classify?

• To group and name organisms logically
• Why not use common names?
• Puma
• Cougar
• Mountain lion
• Panther
• What is it?
• Felis concolor

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Linnaeuss System

• Domain
• Kingdom
• Phylum
• Class
• Order
• Family
• Genus (genera)
• Species

• Eukarya
• Animalia
• Chordata
• Mammalia
• Carnivora
• Ursidae
• Ursus
• Ursus arctos

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Which level is missing?

• Which is the most inclusive level?

Which is the least inclusive level?
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What is a Species?

• A group of organisms so similar they can
  interbreed successfully
• Must be able to produce fertile offspring
• Mule? Hinny?
• these are hybrids
• (when 2 species breed)

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Scientific Names

• Each species is assigned a two-part name its
  scientific name
• Genus (capitalized, can be abbreviated by first
  letter)
• Species (not capitalized)
• Always written in italics
• Examples
• Ursus arctos (grizzly bear)
• E. coli (a bacterium)