Fig. 2From: Generating normal networks via leaf insertion and nearest neighbor interchangeInsertion and child rotations for tree-child networks. a Leaf 3 is attached to a tree edge. b The reticulation insertion is applied to attach a new reticulate node r onto two tree edges. The child rotation swaps the tree node w (yellow) and Leaf 4. Here, green nodes and edges are added nodesBack to article page