Chap 17 bio (Howard)

Taxonomy

Science of classifying and naming organisms

Taxon

Level within the Linnaean system of classification that is organized into a nested hierarchy

Binomial nomenclature

Naming system in which each species is given a two part scientific name (genus and species) using Latin words

Genus

First name in binomial nomenclature the second most specific taxon in the Linnaean classification system that includes one or more physical similar species which are thought to be closely related

Phylogeny

Evolutionary history of a group of related species

Cladistics

Method of organizing species by environmental relationships in which species are grouped according to the order that they diverged from their ancestral line

Cladogram

Diagram that displays proposed evolutionary relationships among a group of species

Derived characters

Trait that differs in structure or function from that found in the ancestral line for a group of species used in constructing cladograms

Molecular clock

Theoretical clock that uses the rate of mutation to measure evolutionary time

Mitochondrial DNA

DNA found only in mitochondria often used as a molecular clock

Ribosomal RNA

RNA that is in the ribosome and guides that translation of mRNA into a protein also used as a molecular clock

Bacteria

One of the three domains of,life containing single called prokaryotes in the Kingdom of Bacteria

Archaea

One of three domains if life containing single called prokaryotes in the Kingdom of Archaea

Eukarya

One of three domains of life contains all eukaryotes in the Kingdom Protista, Plantae, and Fungi , Animalia