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MB 17.2
MB Chapter 17, Section 2
Term | Definition |
---|---|
systematics | a process in which organisms are classified in terms of their natural relationship |
phylogenetics | the analysis of the evolutionary or ancestral relationships among taxa |
phylogenetic diagram | a branching diagram that shows how organisms are related through evolution |
cladistics | a phylogenetic classification system that uses shared derived characters and ancestry as the sole criterion for grouping taxa |
shared character | a feature that all members of a group have in common |
derived character | a feature that evolved only within the group under consideration |
clade | the group of organisms that includes an ancestor plus 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 organisms |