BIOL 1002 Chapter : Ch 26 Ch 28 Test 2
Document Summary
Chapter 26: phylogeny: the evolutionary history of a species or group of related species, systematics: an analytical approach to understanding the diversity and relationships of organisms. Concept 26. 1: phylogenies show evolutionary relationships: taxonomy: the ordered division of organisms into categories based on a set of characteristics used to assess similarities and differences. Hierarchical classification: linnaeus also introduced the system for grouping species in increasingly broad categories, keep pipes clean of gas, kindly professors cannon often fail good students. Linking classification & phylogeny: systematists depict evolutionary relationships in branching phylogenetic trees, each branch point (node) represents the divergence of two species, deeper branch points represent greater amounts of divergence, lines represent lineages. Concept 26. 2: phylogenies are inferred from morphological and molecular data. Concept 26. 3: shared characters are used to construct phylogenetic trees. Cladistics: cladogram: a diagram depicting patterns of shared characteristics among species, clade within a cladogram: a group of species that includes an ancestral species and all of its descendants.
