Beast is a cross-platform program for bayesian mcmc analysis of molecular sequences. it is entirely orientated towards rooted, time-measured phylogenies inferred using strict or relaxed molecular clock models. it can be used as a method of reconstructing phylogenies but is also a framework for testing evolutionary hypotheses without conditioning on a single tree topology. beast uses mcmc to average over tree space, so that each tree is weighted proportional to its posterior probability. included is a simple to use user-interface program for setting up standard analyses and a suit of programs for analysing the results.

this package contains the documentation.