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Bioinformatics Shared Resources

Sanford Burnham Prebys Medical Discovery Institute


MrBayes is a program for the Bayesian estimation of phylogeny.

Bayesian inference of phylogeny is based upon a quantity called the posterior probability distribution of trees, which is the probability of a tree conditioned on the observations. The conditioning is accomplished using Bayes' theorem. The posterior probability distribution of trees is impossible to calculate analytically; instead, MrBayes uses a simulation technique called Markov chain Monte Carlo (or MCMC) to approximate the posterior probabilities of trees.
Where? How?
MrBayes is maintained on the emu linux server. 
Last installation and version
The latest installed version is 3.1, installed on May 27, 2005.
Prior installations available

MrBayes homepage.
GPL (GNU public license)
Local contact
IT: Martin Fleming

Technical Data

  • tested on: Linux Debian 3.0
  • emu path: /usr/local/share/mrbayes_3.1/
  • In default $PATH? no