01:119:116 Quiz: Virology

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Document Summary

Study of diversity of organisms and evolutionary relationships. Two parts: taxonomy: naming, describing, phylogeny: evolutionary history of species/group. Taxonomy: binomial nomenclature: genus + specific epithet. Hierarchical- each level more inclusive than one below it. Domain, kingdom, phylum, class, order, family, genus, species. Representation of evolutionary relationships, not phenotypic similarities: fig. Dichotomies (two way branches: components of trees. Accumulation of genetic changes within populations over time: change in allele frequency, not changes to indiv. during lifetime. Iv: biological diversity: all living organisms, we know most about insects. Virology: capsid (protein) + genome(rna/dna, subcellular, intracellular parasites, smaller than cells, cant do everything cells can do, replicate in cells and use cell"s resources to develop and replicate, viruses don"t/ cannot: Viruses are often very small: 20-300 nm (too small for light microscopy) Genetic material: can be anything: dna/rna, single stranded (ss) or double stranded (ds) or both, linear, circular, or segmented, 2-1000+ genes, viruses don"t use linnaean classifications scheme instead use 7.