BIOL 1202 Chapter : Biol 1202 2 28 2012
Document Summary
Boundaries between units in the geologic time scale are marked by dramatic biotic change. 5 kingdom classification system in use through the late 1900"s. Protists are eukaryotic organisms that are almost entirely unicellular. Monera consists of bacterial and archaean kingdoms that are prokaryotic. Archaean and bacteria are smallest living things on planet. Did king philip come over for gumbo sunday? . Taxon(taxa)= the named taxonomic unit at any level in this taxonomic hierarchy. Linnaeus convinced us to use a hierarchical classification system. Darwin provided us with the mechanism by which evolution results in descent with modification. Systematics- naming and classifying organisms according to their evolutionary relationships. Phylogenetic tree- hypothesized genealogy traced back to the last common ancestor (i. e. , the most recent) through hierarchial, dichotomous branching. Cladistics - the principles that guide the production of phylogenetic trees, a. k. a. , cladograms. A clade is a monophyletic group an ancestral species and all of its descendants.
