Phylogenetic tree | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-03-17

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Phylogenetic_tree


00:00:57 1 History
00:02:12 2 Types
00:02:20 2.1 Rooted tree
00:03:09 2.2 Unrooted tree
00:03:54 2.3 Bifurcating tree
00:06:47 2.4 Special tree types
00:07:52 3 Construction
00:09:40 4 Limitations of phylogenetic analysis



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Voice name: en-AU-Wavenet-D


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SUMMARY
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A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the evolutionary relationships among various biological species or other entities—their phylogeny ()—based upon similarities and differences in their physical or genetic characteristics. All life on Earth is part of a single phylogenetic tree, indicating common ancestry.
In a rooted phylogenetic tree, each node with descendants represents the inferred most recent common ancestor of those descendants, and the edge lengths in some trees may be interpreted as time estimates. Each node is called a taxonomic unit. Internal nodes are generally called hypothetical taxonomic units, as they cannot be directly observed. Trees are useful in fields of biology such as bioinformatics, systematics, and phylogenetics. Unrooted trees illustrate only the relatedness of the leaf nodes and do not require the ancestral root to be known or inferred.