linnaean taxonomy carolus linnaeus organized plants and animals into 7 hierarchical categories. ...
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Linnaean Taxonomy Carolus Linnaeus organized
plants and animals into 7 hierarchical categories. Kingdom Phylum Class Order Family Genus Species
AnimaliaChordataMammaliaPrimatesHominidaeHomoHomo sapiens
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Scientific (species) name Genus + epithet Written in Latin
Dead, but universal scholarly language
Italicized or underlined Ex: Canis familiaris
Mycobacterium leprae
Linnaean Taxonomy
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Archaea Prokaryotic Unicellular Cell walls of various materials Heterotrophic and autotrophic Mostly extreme habitats
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Bacteria Prokaryotic Unicellular Cell walls of peptidoglycan Heterotrophic and autotrophic
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Endosymbiotic Theory Lynn Margulis (1960’s) Ancestors of mitochondria and
chloroplasts were engulfed by eukaryotic cells.
Evidence – m&c… Have double membranes Have their own DNA Reproduce on their own Have their own ribosomes
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Protista All eukaryotes not defined as plants,
fungi, or animals Algae and protozoans
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Fungi Eukaryotic Uni- and multicellular Cell walls of chitin Heterotrophic
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Spread by growth…
…and spore dispersal
Fungi
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Asexual Reproduction
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Fungi
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Plantae
Eukaryotic Multicellular Cellulose walls Autotrophic
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Animalia Eukaryotic Multicellular No cell walls Heterotrophic
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Systematics“Our classifications will come to be
genealogies”Using…Morphology, embryology, paleontology, biochemistry
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Phylogenetic Tree
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Which of these trees depicts a different phylogeny from the other two?
1 2 3
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Amphibians
Phylogenetic Tree - Tetrapods Groups - Amphibians, Birds, Mammals,
Reptiles Primitive Characteristics
Vertebrae, four limbs, heterotrophy, bilateral symmetryReptiles Birds
Feathers
MammalsOther Tetrapods
Ancestral Tetrapod
Amniotic Egg
Endothermy
Fur
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Phylogenetic Tree - Domains(Carl Woese, U of Illinois)
Three domains of living things Reorganization: Archaea more similar to Eukarya
based on molecular data
Progenote
EukaryaProtista, Fungi
Plantae, AnimaliaBacteria
Eukaryotes
Archaea
Prokaryotes Membrane and ribosome structure
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