1. Old & recentancestors Howan animal envoled Biological relationships Modernanimals PhysicalEvidence Physicaltraitssize, color, weight, shape DNA Taxonomists Binomialnomenclature (genus & species) Naming GeneticEvidence Linnaeus & organisms 7 levels of classification Organizing 7 levels of classification Field guide Dichotomouskey Binomialnomenclature Kingdom Phylum Class Order Family Genus Species Levels of classification Systemsfor Classifying organisms