{"id":2859,"date":"2016-06-13T18:35:40","date_gmt":"2016-06-13T18:35:40","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/biologyxwaymakerxmaster\/?post_type=chapter&p=2859"},"modified":"2024-04-26T00:18:16","modified_gmt":"2024-04-26T00:18:16","slug":"outcome-phylogenetic-trees","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/wm-nmbiology1\/chapter\/outcome-phylogenetic-trees\/","title":{"raw":"Introduction to Phylogenetic Trees","rendered":"Introduction to Phylogenetic Trees"},"content":{"raw":"

What you'll learn to do: Read and analyze a phylogenetic tree that documents evolutionary relationships<\/h2>\r\nIn scientific terms, the evolutionary history and relationship of an organism or group of organisms is called phylogeny. Phylogeny<\/strong> describes the relationships of an organism, such as from which organisms it is thought to have evolved, to which species it is most closely related, and so forth.\r\n\r\nPhylogenetic relationships provide information on shared ancestry but not necessarily on how organisms are similar or different. In other words, a \u201ctree of life\u201d can be constructed to illustrate when different organisms evolved and to show the relationships among different organisms (Figure\u00a01).\r\n
\"A\r\n

Figure\u00a01. This phylogenetic tree was constructed by microbiologist Carl Woese (See inset below) using genetic relationships. The tree shows the separation of living organisms into three domains: Bacteria, Archaea, and Eukarya. Bacteria and Archaea are organisms without a nucleus or other organelles surrounded by a membrane and, therefore, are prokaryotes. (credit: modification of work by Eric Gaba)<\/p>\r\n\r\n<\/div>","rendered":"

What you’ll learn to do: Read and analyze a phylogenetic tree that documents evolutionary relationships<\/h2>\n

In scientific terms, the evolutionary history and relationship of an organism or group of organisms is called phylogeny. Phylogeny<\/strong> describes the relationships of an organism, such as from which organisms it is thought to have evolved, to which species it is most closely related, and so forth.<\/p>\n

Phylogenetic relationships provide information on shared ancestry but not necessarily on how organisms are similar or different. In other words, a \u201ctree of life\u201d can be constructed to illustrate when different organisms evolved and to show the relationships among different organisms (Figure\u00a01).<\/p>\n

\"A<\/p>\n

Figure\u00a01. This phylogenetic tree was constructed by microbiologist Carl Woese (See inset below) using genetic relationships. The tree shows the separation of living organisms into three domains: Bacteria, Archaea, and Eukarya. Bacteria and Archaea are organisms without a nucleus or other organelles surrounded by a membrane and, therefore, are prokaryotes. (credit: modification of work by Eric Gaba)<\/p>\n<\/div>\n\n\t\t\t

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Candela Citations<\/h3>\n\t\t\t\t\t
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CC licensed content, Original<\/div>