Testing the relationship between morphological and molecular rates of change along phylogenies

L Bromham, M Woolfit, M S Y Lee, A Rambaut

Research output: Contribution to journalArticlepeer-review

Abstract

Molecular evolution has been considered to be essentially a stochastic process, little influenced by the pace of phenotypic change. This assumption was challenged by a study that demonstrated an association between rates of morphological and molecular change estimated for "total-evidence" phylogenies, a finding that led some researchers to challenge molecular date estimates of major evolutionary radiations. Here we show that Omland's (1997) result is probably due to methodological bias, particularly phylogenetic nonindependence, rather than being indicative of an underlying evolutionary phenomenon. We apply three new methods specifically designed to overcome phylogenetic bias to 13 published phylogenetic datasets for vertebrate taxa, each of which includes both morphological characters and DNA sequence data. We find no evidence of an association between rates of molecular and morphological rates of change.

Original languageEnglish
Pages (from-to)1921-1930
Number of pages10
JournalEvolution
Volume56
Issue number10
Publication statusPublished - Oct 2002

Fingerprint

Dive into the research topics of 'Testing the relationship between morphological and molecular rates of change along phylogenies'. Together they form a unique fingerprint.

Cite this