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Lecture 5

LIFE 121 Lecture 5: Phylogeny and Systematics (Day 5)

2 Pages

Life Sciences
Course Code
LIFE 121

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070315 PHYLOGENY AND SYSTEMATICS I. Linnaean Classification System th A. Carlous Linnaeus 18 Century taxonomist: biologist that identified, named, and classified species 1. binomial system nomenclature a. each species assigned 2 part, Latin name EX Leopard Frog Rana = genus pipiens = specific epithet Rana pipiens = species 2. grouped species into a hierarchy of categories a. taxon: the name taxonomic unit at any given level of classification Hierarchical classification: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species II. Phylogeny and phylogenetics A. Phylogeny: evolutionary history of groups of organisms a. Phylon: tribe b. genesis 1. evidence from fossil record and from morphological and molecular homologies 2. not all similar morphologies are inherited from common ancestor Convergent evolution: species from different evolution origins may come to resemble o
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