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| View Original: | 生命系统发生树.svg (1850x1250) | |||
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| Keywords: 生命系统发生树.svg en 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 zh 这是 棵基于RNA资料的和由卡尔· 斯提出的生命系统发生树 这棵发生树分为三个分支：细菌 古菌和 核生物 虽然由其他基因构成的发生树对于早 分支的分类很不相同，但是由于长分 吸引，使得他们大体上是相同的 按照树根现 的位置，三域的确切关系还 辩论当中 曾经 人建议，因为横向基因转移， 棵发生树 必能 好体现 生物体的基因关系 例如， 些遗传学的证据表明， 核细胞是进化自 些细菌和古菌（ 种 为细胞器，另 种 为细胞主体）的结合体 File Phylogenetic tree svg Caiguanhao 2009-8-2 Phylogenetic tree of life | ||||
