01:119:115 Lecture Notes - Lecture 22: Descent Ii, Lineage Ii, Epithet

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:115
• Professor: Stern Cardinale

Document Summary

Systematics: the study of the diversity of organisms & evolutionary relationships, 2 parts, taxonomy- describing, naming, & classifying organisms, phylogeny- evolutionary history. Genus escherichia , while: specific epithet is not necessarily unique. Hierarchical classification: species- basic level, hierarchy- levels of classification. Domain> kingdom> phylum> class> order> family> genus> species. Dumb kings play chess on fat girls" stomachs. Taxon (taxa)- grouping of organisms at any one level: each taxonomic level is more inclusive (has more species) than level below. History of group of organisms; show patterns of descent not phenotypic similarity: represents hypothesis about evol. Relationships: series of dichotomies- 2way branch points, components of a tree, branch points=nodes; divergence of 2 evol. Branches can be rotated around a branch point w/o changing relationships: sister taxa- groups of organisms that share an immediate ca. Phylogenies are inferred from morphological & molecular data: evolutionary history of a group of organisms from a ca.