What are the seven taxa in hierarchical order, from most general to most specific?

eight.3C: The Levels of Classification

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Taxanomic classification divides species in a hierarchical system beginning with a domain and ending with a single species.

Learning Objectives

Draw how taxonomic nomenclature of organisms is accomplished and detail the levels of taxonomic classification from domain to species

Key Points

Categories within taxonomic classification are arranged in increasing specificity.
The nigh full general category in taxonomic classification is domain, which is the bespeak of origin for all species; all species vest to one of these domains: Bacteria, Archaea, and Eukarya.
Within each of the iii domains, we find kingdoms, the second category within taxonomic classification, followed by subsequent categories that include phylum, class, guild, family, genus, and species.
At each nomenclature category, organisms become more similar considering they are more than closely related.
As scientific applied science advances, changes to the taxonomic classification of many species must be contradistinct as inaccuracies in classifications are discovered and corrected.

Primal Terms

binomial classification: the scientific organisation of naming each species of organism with a Latinized name in ii parts
taxon: any of the taxonomic categories such as phylum or subspecies
Linnaeus: Swedish botanist, physician and zoologist who laid the foundations for the modern scheme of nomenclature; known as the "begetter of modern taxonomy"

The Levels of Classification

Taxonomy (which literally means "arrangement law") is the scientific discipline of classifying organisms to construct internationally-shared classification systems with each organism placed into more and more inclusive groupings. Think about how a grocery store is organized. One large space is divided into departments, such as produce, dairy, and meats. And then each department further divides into aisles, so each aisle into categories and brands, then, finally, a single product. This organisation from larger to smaller, more-specific categories is called a hierarchical system.

Figure: **Hierarchical models**: The taxonomic classification system uses a hierarchical model to organize living organisms into increasingly specific categories. The common dog, Canis lupus familiaris, is a subspecies of Canis lupus, which also includes the wolf and dingo.

The taxonomic classification organisation (too called the Linnaean system after its inventor, Carl Linnaeus, a Swedish botanist, zoologist, and doc) uses a hierarchical model. Moving from the point of origin, the groups become more specific, until one branch ends equally a single species. For example, after the common beginning of all life, scientists divide organisms into iii large categories called domains: Leaner, Archaea, and Eukarya. Within each domain is a 2nd category called a kingdom. After kingdoms, the subsequent categories of increasing specificity are: phylum, class, social club, family, genus, and species.

Figure: **Levels in taxonomic classification**: At each sublevel in the taxonomic classification system, organisms go more similar. Dogs and wolves are the aforementioned species considering they can breed and produce feasible offspring, but they are different enough to be classified every bit different subspecies.

The kingdom Animalia stems from the Eukarya domain. The full name of an organism technically has viii terms. For dogs, it is: Eukarya, Animalia, Chordata, Mammalia, Carnivora, Canidae, Canis, and lupus. Notice that each name is capitalized except for species and that genus and species names are italicized. Scientists generally refer to an organism just by its genus and species, which is its two-word scientific name, in what is called binomial nomenclature. Therefore, the scientific name of the canis familiaris is Canis lupus. The proper name at each level is also chosen a taxon. In other words, dogs are in order Carnivora. Carnivora is the name of the taxon at the social club level; Canidae is the taxon at the family level, and and so forth. Organisms as well have a mutual name that people typically use; in this case, canis familiaris. Note that the dog is additionally a subspecies: the "familiaris" in Canis lupus familiaris. Subspecies are members of the same species that are capable of mating and reproducing feasible offspring, only they are considered separate subspecies due to geographic or behavioral isolation or other factors.

Dogs actually share a domain (Eukarya) with the widest diversity of organisms, including plants and butterflies. At each sublevel, the organisms get more like because they are more than closely related. Historically, scientists classified organisms using physical characteristics, but as Deoxyribonucleic acid technology adult, more than precise phylogenies have been determined.

Contempo genetic analysis and other advancements have found that some earlier phylogenetic classifications do non align with the evolutionary past; therefore, changes and updates must exist made every bit new discoveries occur. Call up that phylogenetic copse are hypotheses and are modified every bit data becomes available. In addition, classification historically has focused on group organisms mainly past shared characteristics and does non necessarily illustrate how the various groups relate to each other from an evolutionary perspective. For example, despite the fact that a hippopotamus resembles a pig more than a whale, the hippopotamus may exist the closest living relative to the whale.

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Source: https://bio.libretexts.org/Bookshelves/Microbiology/Book%3A_Microbiology_(Boundless)/8%3A_Microbial_Evolution_Phylogeny_and_Diversity/8.03%3A_Microbial_Phylogeny/8.3C%3A_The_Levels_of_Classification

What are the seven taxa in hierarchical order, from most general to most specific?

eight.3C: The Levels of Classification

Key Points

Primal Terms

The Levels of Classification

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