Biology Chapter 26
Biology Chapter 26 1543
U of L
Popular in DIVERSITY OF LIFE - S (Lecture)
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This 2 page Class Notes was uploaded by jethom25 Notetaker on Saturday August 27, 2016. The Class Notes belongs to 1543 at University of Louisville taught by James Alexander in Fall 2016. Since its upload, it has received 58 views. For similar materials see DIVERSITY OF LIFE - S (Lecture) in Biology at University of Louisville.
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Date Created: 08/27/16
Comparing and contrasting the terms: taxonomy, classification, systematics and phylogeny Taxonomy- field of biology that is involved in naming, describing and classifying organisms. Both fossil (extinct) species and living (extant) species Classification- orders and ranks things into a series of hierarchical levels, species into genera. Classification is one branch of taxonomy where various things identified and grouped together into groups. Systematics - field of biology concerned with the identification of the evolutionary relationships among species through time Phylogeny- the pattern and history of evolutionary descent of all of the taxa used in a classification of organisms. About taxonomic: There are 8 major taxonomic levels. They are domain, kingdom, phylum, class, order, family, genus, and species. We give a species a name using binomial nomenclature. But, how? Binomial nomenclature systems make it to where each species have a two-part name, called Genus species. The genus is the closest group to which a species belongs and the specific epithet, the second part of the name, refers to one species within each genus. Who proposed the binomial nomenclature system? Linneaus Now, what’s the definition for the 8 major taxonomic levels? Domain- The highest taxonomic rank of organisms in which there are three groupings: Archaea, Bacteria and Eukarya. Kingdom- taxonomic rank that is composed of smaller groups called phyla Phylum- group of Classes with similar distinctive characteristics Class- taxonomic group comprised of organisms that share common characteristics, attributes, qualities or traits. Order- comprised of families sharing a set of similar nature or character, typically in series Family- taxonomic rank in the classification of organisms between genus and order sharing common attributes Genus- includes group(s) of species that are structurally similar or phylogenetically related. Species- most basic unit or category of biological classification. These organisms can produce fertile offspring. Appear to be closely related are grouped into the same genus. “The sub- and super- prefixes indicate lower or higher taxonomic categories, compared to the taxonomic category being classified. For example, one or more orders would be in a superorder; one or more suborders would be in a single order.” There are 7 additional taxonomic categories that we will be discussing in class: subphylum, superphylum, superorder, suborder, subclass, superclass, subspecies.
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