Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

Comparison of Undirected Phylogenetic Trees Based on Subtrees of Four Evolutionary Units

George F. Estabrook, F. R. McMorris and Christopher A. Meacham
Systematic Zoology
Vol. 34, No. 2 (Jun., 1985), pp. 193-200
DOI: 10.2307/2413326
Stable URL: http://www.jstor.org/stable/2413326
Page Count: 8
  • Download ($42.00)
  • Cite this Item
Comparison of Undirected Phylogenetic Trees Based on Subtrees of Four Evolutionary Units
Preview not available

Abstract

A method to measure how similar are two phylogenetic trees for the same collection of evolutionary units (EUs) is described. The measure does not change with changes in the direction of evolution in either of the two trees being compared, and thus it depends only on the convexity and proximity of the groups of EUs within the collection under study. It can also be used with only partially resolved phylogenetic trees. The measure is based on the idea that a group of four EUs is the smallest group for which there is more than one possible distinct undirected phylogenetic tree. For a given phylogenetic tree, the undirected subtree inherited by a group of four EUs is the tree that results when all the branches containing only EUs not in this group of four are removed. Every group of four EUs either inherits one of three distinct types of undirected phylogenetic trees, or is unresolved. Two phylogenetic trees can be compared on the basis of which groups of four EUs inherit the same type of undirected phylogenetic tree. The ideas can be extended to comparisons of three or more trees.

Page Thumbnails

  • Thumbnail: Page 
193
    193
  • Thumbnail: Page 
194
    194
  • Thumbnail: Page 
195
    195
  • Thumbnail: Page 
196
    196
  • Thumbnail: Page 
197
    197
  • Thumbnail: Page 
198
    198
  • Thumbnail: Page 
199
    199
  • Thumbnail: Page 
200
    200