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Chapter 17

vocab

TermDefinition
Classification The grouping of objects or organisms based on a set of criteria
Taxonomy A discipline of biology primarily concerned with identifying, naming, and classifying species based on natural relationships.
Binomial nomenclature Gives each species a scientific name with two parts.
Taxon A named group of organisms.
Genus A group of species that are closely related and share a common ancestor.
Family The next highest taxon consisting of similar, related genera.
Order contains related families.
Class Contains related orders.
Phylum For classifying animals.
Division for classifying bacteria and plants.
Kingdom A taxon composed of related phyla or divisions
Domain THe broadest of all the taxa and contains one or more kingdoms.
Phylogeny The evolutionary history of a species.
Character Inherited features that vary among species.
Molecular clock A model that is used to compare DNA sequences from two different species to estimate how long the species have been evolving since they diverged from a common ancestor.
Cladistics A method that classifies organisms according to the order that they diverged from a common ancestor.
Cladogram A branching diagram that represents the proposed phylogeny or evolutionary history of a species or group.
Archaea Thought to be more ancient than bacteria and yet more closely related to Eukaryota ancestors.
Protist Eukaryotic organisms that can be unicellular, colonial, or multicellular.
Fungus A unicellular or multicellular Eukaryota that absorbs nutrients from organic materials i its environment.
Created by: drferrell
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