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==Key Stage 4==
===Meaning===
'''Taxonomy''' is sorting living [[organism]]s into groups based on their similarities.
===About Taxonomy===
: Before the discovery of [[DNA]] '''taxonomy''' was purely based on the appearance and behaviour of [[organism]]s.
[[Carl Linnaeus]] developed a system of '''taxonomy''' 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 '''taxonomy''' 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.