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Biology 17-2

TermDefinition
Systematics the classification of living organisms in terms of their natural relationships; it includes describing, naming, and classifying the organisms
Phylogenetics the analysis of evolutionary, or ancestral, relationships between taxa
Phylogenetic diagram a branching diagram that models the relationships by ancestry between different species or other taxonomic groups based on various evolutionary evidence
Cladistics a phylogenetic classification system that uses shared derived characters and ancestry as the sole criterion for grouping taxa
Shared character a feature that is common in all members of a particular group of organisms
Derived character a feature that evolved only within a particular taxonomic group
Clade a taxonomic grouping that includes only a single ancestor and all of its descendants
Cladogram a diagram that is based on patterns of shared, derived traits and that shows the presumed evolutionary relationships between groups of organisms
Created by: zickel
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