TAXONOMY Unit 1 Diversity of Living Things HOW

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TAXONOMY Unit 1 – Diversity of Living Things

TAXONOMY Unit 1 – Diversity of Living Things

HOW DO WE ORGANIZE LIVING THINGS? p We name all organisms using many names:

HOW DO WE ORGANIZE LIVING THINGS? p We name all organisms using many names: s n n n n K ingdom P hylum C lass O rder F amily G enus S pecies Each level is p King e c Phillip i Cried f i Out c “For Goodness Sakes!” called a “taxon”

SIX KINGDOMS Unicellular single-cell p Multicellular many cells p Prokaryotic no nucleus present in

SIX KINGDOMS Unicellular single-cell p Multicellular many cells p Prokaryotic no nucleus present in cells p Eukaryotic nucleus present in cells p p Each kingdom has many phyla n Each phylum has many classes p Each class has many orders § Etc.

TAXONOMY Taxonomy system of naming organisms p Carl Linnaeus p n n p Scientific

TAXONOMY Taxonomy system of naming organisms p Carl Linnaeus p n n p Scientific name of any animal: Genus species Written in italics n “Genus” is capitalized Names are Latin/Greek n p Swedish botanist and ecologist Designed binomial nomenclature binomial = two-name nomenclature = system Carl Linnaeus Homo sapien

CLADOGRAMS p Cladogram the family tree for all living things that describes phylogenetic (evolutionary)

CLADOGRAMS p Cladogram the family tree for all living things that describes phylogenetic (evolutionary) relationships p How do we figure out how organisms are related? n p Look for homologies (common characteristics)! Dichotomous keys: n Classifying based on presence/absence of traits (yes/no questions)

DINOSAUR CLADOGRAM Common ancestors areat the base, and branches are evolutionary “families” with common

DINOSAUR CLADOGRAM Common ancestors areat the base, and branches are evolutionary “families” with common traits

RECAP: TAXONOMY KEY WORDS p p p p p Kingdom, Phylum, Class, Order, Family,

RECAP: TAXONOMY KEY WORDS p p p p p Kingdom, Phylum, Class, Order, Family, Genus, Species Taxon (plural: taxa) Unicellular, multicellular Prokaryotic, eukaryotic Taxonomy Binomial nomenclature Cladogram Phylogeny / phylogenetic Homology / homologies / homologous Dichotomous key