Evolutionary biologists have long been fascinated by the extreme differences in species numbers across branches of the Tree of Life. This has motivated the development of statistical methods for det
aSubstitution rate per residue per billion years shown in ascending order by pathway. For each pathway an example of two physically interacting proteins with concordant rates is underlined (e.g., Shag
A long-standing hypothesis in evolutionary biology is that the evolution of resource specialization can lead to an evolutionary dead end, where specialists have low diversification rates and limited a
