Figure 4

The estimates of the birth and death rates on the branches of the phylogenetic tree for 1254 gene families of the five yeast species. The birth and death rates were estimated under the Bayesian heterogeneous rate model. The interval on each branch is the 95% credible interval for the birth and death rate λ. The branch lengths t in the tree are given in millions of years [4]. The branch numbers are highlighted in red.