Distribution of branch lengths and phylogenetic diversity under homogeneous speciation models

► Derivation of closed form edge length distribution in Yule and birth-death trees. ► Derivation of closed form diversity distribution in Yule trees. ► Edges in Yule trees are half as long as intuitively expected. ► Root edges in Yule trees are twice as long as random edges. ► Sampling rate is non-identifiable based on reconstructed birth-death trees.