Fig. 5
From: A general framework for genome rearrangement with biological constraints
On the top: 4 steps of a parsimonious \(\mathcal {O}\)-scenario for a circle are depicted together with each \(\mathcal {T}\) corresponding to the scenario at that point colored in blue. Vertices of \(\mathcal {T}\) are superimposed on the corresponding edges of a circle providing their circular embedding. All of the \(\mathcal {T}\) are planar trees. On the bottom: for a given planar tree \(\mathcal {T}\) (dashed blue) we provide a scenario \(\rho _{\mathcal {O}}\) such that \(\mathcal {T} (\rho _{\mathcal {O}})=\mathcal {T}\)