Figure 2
From: An asymmetric approach to preserve common intervals while sorting by reversals
Evolutionary scenario between Rickettsia felis and one of its ancestors. (A) Phylogenetic tree of six Rickettsia (extracted from [2]). The numbers on the edges give the reversal distance between the genomes on the vertices, which could be either a current species or an ancestor (R 1, R 2, R 3, R 4 and R 5). (B) The optimal sequence of reversals to transform the ancestor R 2 into Rickettsia felis (proposed by Blanc et al. [2] with the help of the software GRIMM[10]). The two common interval breaks are indicated by the "comma" signs.