BIOL 1202 : Bio 1202 Exam 2 Notes
Document Summary
Ch 26: phylogeny & the tree of life. 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, (fig 26. 3) Classification: kingdom, phylum, class order, family, genus, species. Linking classification & phylogeny: systematists depict evolutionary relationships in branching phylogentic trees, each branch point (node) represents the divergence of two species, deeper branch points represent greater amounts of divergence, lines represent lineages, (fig 26. 4) Interpreting phylogenetic trees: rotating around any node leaves a phylogeny unchanged. ***which of the following represents the correct order of taxa, from the most inclusive to the least inclusive: domain, kingdom, phylum, class, order, family, genus.
