= Phylogenomics
<Phylogenomics> uses genome-scale evidence to investigate evolutionary relationships and <gene> histories. Many sampled loci can improve resolution, but their histories need not be identical: <incomplete lineage sorting>, duplication and <introgression> can make a <gene tree> differ from a <species tree>.
Adding sequences therefore creates a modeling question as well as a larger dataset. Concatenating all loci assumes a shared history in a way that methods explicitly representing variation among <gene trees> need not. Strong support conditional on a model does not by itself validate that model's account of the evolutionary process.
Back to article page
