Chapter 20

responsible for ordered division and naming organisms

• phylogeny

• taxonomy

• systematics

• phylogenetic trees

classifies organisms and determine evolutionary relationship

• phylogeny

• taxonomy

• systematics

• phylogenetic trees

organize all living organisms by evolutionary relatedness

• phylogeny

• taxonomy

• systematics

• phylogenetic trees

phylogenetic trees

• branching diagrams represent evolutionary relationships

• match classifying groups of organisms in more inclusive groups

• loss of key feature over evolution may result in misclassification

• rank species based on importance and significance in evolution

closely related organisms share

• a common ancestor

• genes

• metabolic pathways

• structural proteins

binomial nomenclature

• 18th century

• Carolus Linnaeus

• two-part names for species

• hierarchial classification

taxonomic unit at any level of hierarchy

• binomial

• genus

• epithet

• taxon

two-part form of scientific name

• binomial

• genus

• epithet

• taxon

1st part of name

• epithet

• genus

2nd part of name

• genus

• epithet

• unique for each species