Phylogenetics

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Phylogenetics
Wikipedia, the free encyclopedia

Factsheet
Just the Facts: A Basic Introduction to the Science Underlying NCBI Resources
SYSTEMATICS AND MOLECULAR PHYLOGENETICS
 
Phylogenetics
From the obtained distance matrix, a phylogenetic tree is calculated with clustering algorithms. These cluster methods construct a tree by linking the least distant pair of taxa, followed by successively more distant taxa.  

Phylogenetics: just methods
The number of available methods in phylogeny and systematics may appear to be daunting not only to beginning students but also to well-established researchers. Admittedly, anyone with a copy of, say, PAUP* can learn how to "point and shoot" to make a neighbor-joining tree, or a cladogram or a likelihood tree, but this doesn't really mean you know what you're doing and we suspect that you'd probably like to know. This site is designed to do that. To provide you with an understanding of the various methods you might encounter so as to allow you to make informed decisions about what you think is defensible and appropriate. 

UCMP Glossary: Phylogenetics
reticulation -- Joining of separate lineages on a phylogenetic tree, generally through hybridization or through lateral gene transfer. Fairly common in certain land plant clades; reticulation is thought to be rare among metazoans. 

SASB Introduction to Phylogenetics
Phylogenetic analysis was originally developed by biological systematists who wanted to reconstruct evolutionary genealogies of species based on morphological similarities. The German entomologist Willi Hennig was the first author to propose an explicit method of phylogenetic analysis, and the publication of his work in English (Hennig 1966) quickly led to the widespread use of his approach. Phylogenetic methods used to reconstruct the relationships between macromolecular sequences also involve the application of Hennigian principles.