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.

Squared-Change Parsimony Reconstructions of Ancestral States for Continuous-Valued Characters on a Phylogenetic Tree

Wayne P. Maddison
Systematic Zoology
Vol. 40, No. 3 (Sep., 1991), pp. 304-314
DOI: 10.2307/2992324
Stable URL: http://www.jstor.org/stable/2992324
Page Count: 11
  • Download ($42.00)
  • Cite this Item
Squared-Change Parsimony Reconstructions of Ancestral States for Continuous-Valued Characters on a Phylogenetic Tree
Preview not available

Abstract

A direct algorithm is described to reconstruct on a phylogenetic tree the ancestral states of a continuous-valued character, using a parsimony criterion that minimizes the sum of squared changes along the branches. It is shown that when the squared changes are inversely weighted by the lengths of the branches, the squared-change parsimony reconstruction is that which has maximum posterior probability under a Brownian motion model of evolution. The squared-change parsimony estimates are also closely related to the contrasts in Felsenstein's test of character correlation.

Page Thumbnails

  • Thumbnail: Page 
304
    304
  • Thumbnail: Page 
305
    305
  • Thumbnail: Page 
306
    306
  • Thumbnail: Page 
307
    307
  • Thumbnail: Page 
308
    308
  • Thumbnail: Page 
309
    309
  • Thumbnail: Page 
310
    310
  • Thumbnail: Page 
311
    311
  • Thumbnail: Page 
312
    312
  • Thumbnail: Page 
313
    313
  • Thumbnail: Page 
314
    314