Figure 2
From: Bootstrap-based Support of HGT Inferred by Maximum Parsimony
(a) A scenario where none of four HGT edges identified individually in 100 bootstrap samples has good support (the recipient of each of the four edges is the same node v in the species tree). (b) When combined, thus allowing for ambiguity in pinpointing the exact source, a well-supported hypothesis of an HGT emerges.