01:119:116 Lecture Notes - Lecture 1: West Nile Fever, Binomial Nomenclature, Lipid Bilayer
12 Apr 2016
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Classification review {26. 1} systematics: study of diversity of organism and evolutionary relationship taxonomy: naming, classifying, describing. 1: phylogeny: evolutionary history of species of group binomial nomenclature: genus + species epithet. Linnean classification: hierarchical domain> kingdom>phylum>class>order>family>genus>species taxon: group @ any level tree- representation of evolutionary relationship *not phenotypic similarities* ~dichotomies: 2 way branches (outgroup- basal taxa) other vocab [branch point, diverge, polytomy (3+ branches), node, sister taxa] **connecting phylogeny and taxonomy (classification) analogies mess with tree (ca did not have) taxonomy should reflect phylogeny (history) evolution: genetic change within population over time. Not during lifetime (metamorphosis) mechanisms: natural selection (variation) biodiversity: the variety of life in a certain place most identifies: insects. Viruses are not derived from preexisting cells, but they are derived from preexisting viruses virus: nonliving subcellular, intracellular parasite with genetic dna and protein coat. ~capsid (hexagonal protein coat of capsomeres) determines morphology and attachment to cell. ~genome (dna or rna) linear, segmented, 2-1,000 genes, ss and ds.
