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phylogenetic tree |
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phylogenetic treeDiagram showing the evolutionary interrelations of a group of organisms that usually originated from a shared ancestral form. The ancestor is in the tree trunk; organisms that have arisen from it are placed at the ends of tree branches. The distance of one group from the other groups indicates the degree of relationship; that is, closely related groups are located on branches close to one another. Though phylogenetic trees are speculative, they provide a convenient method for studying phylogenetic relationships and evolution. See also phylogeny. phylogenetic tree [‚fī·lō·jə¦ned·ik ′trē] (evolution) How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The phylogenetic tree, on the other hand, suggests that the isolates from the current Malaysia outbreak share a common ancestral lineage to the 2 Malaysian isolates recovered in 1998 (4; GenBank accession nos. Other topics include how fossils illuminate ancient ontogeny, how genetic information is inherited, and how phylogenetic trees convey the evolutionary processes of species. Haplogroups can be understood as large branches on the human Y-chromosome phylogenetic tree. |
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