BIOL 1604 Lecture Notes - Lecture 4: Protist, Paraphyly, Comparative Embryology
Document Summary
Humans have always classified organisms using different criteria and have used common names but they needed a classification system that could be used worldwide and needed a classification system to reflect evolutionary relationships: taxonomy. Looks for a formal system for naming and grouping species to communicate an order: nomenclature. The assignment of distinctive names to each species: systematics. Studies variation among animal populations to revel their evolutionary relationships. Binomial system of nomenclature: karl von linne (linnawus) Developed a hierarchal system of classification using morphology. One correct name composed of two parts, written in italics: genetic name (genus, trivial name (specific, modern style. Current criteria for recognition of species include ancestry (relations ancestor-descent) A major goal of systematics is to infer an evolutionary tree or phylogeny that relates extant and extinct species. Grouping species that forms units of common evolutionary descent.
