What is the formal terminology for two species that are “close” to each other in a phylogenetic tree?
Take for example the human and the chimpanzee, they are "closely related" species since they are "close" to each other in a phylogenetic tree. However, this terminology seems pretty informal, what ...
Is there a term which can quantify how 'spread out' a particular character is on a tree? I want to distinguish between a character which is only restricted to a particular clade vs. a character that ...