Fig. 2
From: Rates, intrinsic linkages, and multistate population dynamics
Diagrams of three N-state tree-form models. Note: In Panel a, states can be added to the left of state 1 and to the right of state 5. In Panel b, states can be added to the left of state 1 and to the right of states 5 and 7. In Panel c, all four spokes can be extended, and additional spokes can be connected to central state 3