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Biology Chpater 17.2

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.
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 shared by 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 evolutionary relationships between groups of organism.
Created by: DragonT20