Figure 6
From: The prevalence of gene duplications and their ancient origin in Rhodobacter sphaeroides 2.4.1
The phylogenetic relationship of duplicate protein pairs and their highest matching ortholog sequences. Maximum likelihood trees representing four of these relationships are shown above for hisD I and hisD II , sdhB and frdB, sac1 and a hypothetical protein, and traI and a hypothetical protein. Each of these unrooted trees displayed a bootstrap value of 100. The offshoots represent branches and their lengths are given (trees are not to scale). The relationships depict two types of topology - Type A or Type B.