Cross-Species Transmission and Differential Fate of an Endogenous Retrovirus in Three Mammal Lineages
A maximum likelihood phylogenetic tree built from a multiple alignment of 3’ LTR sequences of 75 proviruses. The support for each node as determined with an approximate likelihood ratio test is shown. Information on the species origin as well as the presence/absence of envelope sequence is labeled at each node. Two independent losses of envelope by deletion are highlighted.