English: A phylogenetic tree of living things, based on RNA data and proposed by Carl Woese, showing the separation of bacteria, archaea, and eukaryotes. Trees constructed with other genes are generally similar, although they may place some early-branching groups very differently, thanks to long branch attraction. The exact relationships of the three domains are still being debated, as is the position of the root of the tree. It has also been suggested that due to lateral gene transfer, a tree may not be the best representation of the genetic relationships of all organisms. For instance some genetic evidence suggests that eukaryotes evolved from the union of some bacteria and archaea (one becoming an organelle and the other the main cell).
Français :Arbre phylogénétique hypothétique de tous les organismes vivants. L'arbre est basé sur des séquences de l'ARNr 16S. À l'origine proposé par Carl Woese, il montre l'histoire évolutive des trois domaines du vivant (bactéries, archaea et eucaryotes).
Italiano:Albero filogenetico dei viventi. Basato sulle sequenze di Rna 16s, è stato originariamente proposto da Carl Woese e mostra la divisione dei tre domini degli organismi: Archea, Bacteria e Eukarya. Alberi costruiti su altre sequenze geniche sono generalmente molto simili, nonostante possano riposizionare differentemente alcuni dei gruppi più antichi. L'esatta relazione fra i tre domini è ancora oggetto di dibattito, così come la posizione della radice dell'albero. è stato inoltre suggerito che a causa dei trasferimenti laterali dei geni, un albero potrebbe non essere la migliore rappresentazione delle relazioni di tutti gli organismi. Per esempio alcune prove genetiche portano a credere che gli eucarioti si sarebbero evoluti dall'unione fra alcuni batteri e archibatteri (endosimbiosi).
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{{Information |Description=A phylogenetic tree of living things, based on RNA data and proposed by Carl Woese, showing the separation of bacteria, archaea, and eukaryotes. Trees constructed with other genes are generally similar, although they may place
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