# treetime > TreeTime provides routines for ancestral sequence reconstruction and inference of molecular-clock phylogenies. > More information: . - Infer ancestral sequences maximizing the joint or marginal likelihood: `treetime ancestral` - Analyze patterns of recurrent mutations aka homoplasies: `treetime homoplasy` - Estimate molecular clock parameters and reroot the tree: `treetime clock` - Map discrete character such as host or country to the tree: `treetime mugration`