Evolutionary analysis of three ELVgv integrations. (A) Schematic depiction of ELVgv life history. The bottom axis depicts evolutionary time since present in millions of years. Ages of the most recent common ancestors of analyzed proviruses were estimated from ML phylogeny by assuming a known time of the Galeopterus/Cynocephalus split. Dashed line indicates the time preceding the integration of each provirus. Various evolutionary events are shown in the bottom part of the scheme. (B) ML tree of ELVgv proviral nucleotide sequences. Different colors correspond to the three proviral integrations (A, B, and C). Numbers next to nodes correspond to bootstrap values. Points corresponding to the estimated integration events of each provirus (details in main text) are depicted by arrows. Scale bar represents number of substitutions per nucleotide.