==Key Stage 4=====Meaning==='''Classification''' is sorting living #Redirect [[organismTaxonomy]]s into groups based on their similarities. ===About Classification===: Before the discovery of [[DNA]] '''classification''' was purely based on the appearance and behaviour of [[organism]]s.[[Carl Linnaeus]] developed a system of '''classification''' based on the similar characteristics of [[organism]]s. [[Organism]]s were put into groups and sub-groups:*Kingdom - The largest group. Examples include [[animal]]s and [[plant]]s.*Phylum - The second largest group. Examples include [[chordata]] (animals with a backbone) and [[Arthropoda]] (animals with jointed legs and segmented bodies).*Class - Examples include [[mammal]]s (humans, neanderthals, chimpanzees, bonobos, gorillas, baboons, lemurs, dolphins, whales, cows, badgers) and [[bird]]s (crows, ostriches).*Order - Examples include [[primate]]s (humans, neanderthals, chimpanzees, bonobos, gorillas, baboons, lemurs) and [[cetacea]] (dolphins and whales).*Family - Examples include [[hominidae]] (humans, neanderthals, chimpanzees, bonobos and gorillas) and [[Cercopithecidae]] (baboons).*Genus - Examples include [[Homo]] ([[human]]s and [[neanderthal]]s) and [[Pan]] (chimpanzees and bonobos).*Species - Sapien is the name for the [[human]] [[species]].Developments in [[genetic]]s have further added to this system with three [[Domain]]s above the [[Kingdom]]s:*Archae - Primitive forms of [[bacteria]].*Bacteria*Eukaryota - All [[Eukaryotic Cell|eukaryotic]] [[organism]]s.: Analysis of [[DNA]] evidence has resulted in many changes to where [[organism]]s are placed in the '''classification''' system. For example Panda's were once though to be closely related to the weasel but genetic evidence shows they are a type of bear moving them from the family; Mustelidae to the family; Ursidae.