2. Classification

3.  The organization of species into groups based on their characteristics  Taxonomy = the science of classification

4. Classification  2+ million DESCRIBED species  10 to 50+ million species estimated on Earth  ALL organisms placed into one of 3 domains  Each domain is made up of kingdoms  Each kingdom is broken down into smaller phyla

5. Domain 1: Bacteria I. Bacteria: Most of the Known Prokaryotes 29+ accepted phyla of bacteria # growing with improved methods of identifying bacteria

6. Domain 2: Archaea II. Archaea: Prokaryotes of Extreme Environments Crenarchaeota: Thermophiles Euryarchaeota: Methanogens & Halophiles Korarchaeota: Some Hot Springs Microbes

7. Domain 3: Eukarya III. Eukarya: Eukaryotic Cells Kingdom Protista—single-celled critters and algae Kingdom Fungi—molds, mushrooms, yeast, etc. Kingdom Plantae—plants Kingdom Animalia—animals

8. Phylogenetic treePhylogenetic tree showing the diversity of bacteria, compared to other organisms. Eukaryotes are colored red, archaea green and bacteria blue. Eukaryotesarchaea Ciccarelli FD, Doerks T, von Mering C, Creevey CJ, Snel B, Bork P (2006). "Toward automatic reconstruction of a highly resolved tree of life". Science 311 (5765): 1283–7

9. 6 Kingdoms  Archaea  Eubacteria  Protista  Fungi  Plantae  Animalia prokaryotes eukaryotes

10. Classification hierarchy  Domain  Kingdom  Phylum  Class  Order  Family  Genus  Species Dear King Phillip Calls Out For Good Soup

11. Timber wolf  Domain: Eukarya  Kingdom: Animalia  Phylum: Chordata  Subphylum: Vertebrata  Class: Mammalia  Order: Carnivora  Family: Canidae  Genus: Canis  Specific epithet: lupus Canis lupus L. http://en.wikipedia.org/wiki/Gray_wolf

12. L = Linnaeus  Swedish botanist, Carolus Linnaeus  1707-1778  Developed the current classification system

13. Scientific names  Unique to each species  2 parts to each scientific name Genus Specific epithet  Written in Latin  Generally have a meaning—describes the species

14. Scientific names  Example: mountain lion puma klandagi cat of many names cat of one color tyger ghost walker concolor paintercatamount panther cougar koe-ishto cuguacuarana leopardo ko-icto el leon

15. Scientific names  Example: mountain lion  Scientific name: Puma concolor genus specific epithet scientific name

16. Scientific names  But there’s more!!!  Caretta caretta = loggerhead sea turtle But…there are different populations of C. caretta around the world—and they have slightly different characteristics.  Atlantic loggerhead = Caretta caretta caretta  Pacific loggerhead = Caretta caretta gigas

17. Dichotomous keys