Reconstructing ancestral character states: a critical reappraisal.

Journal Article

Using parsimony to reconstruct ancestral character states on a phylogenetic tree has become a popular method for testing ecological and evolutionary hypotheses. Despite its popularity, the assumptions and uncertainties of reconstructing the ancestral states of a single character have received less attention than the much less challenging endeavor of reconstructing phylogenetic trees from many characters. Recent research suggests that parsimony reconstructions are often sensitive to violations of the almost universal assumption of equal probabilities of gains and losses. In addition, maximum likelihood has been developed as an alternative to parsimony reconstruction, and has also revealed a surprising amount of uncertainty in ancestral reconstructions.

Full Text

Duke Authors

Cited Authors

  • Cunningham, CW; Omland, KE; Oakley, TH

Published Date

  • September 1, 1998

Published In

Volume / Issue

  • 13 / 9

Start / End Page

  • 361 - 366

PubMed ID

  • 21238344

International Standard Serial Number (ISSN)

  • 0169-5347

Language

  • eng

Conference Location

  • England