ML phylogenetic tree of HIV-1 subtype G <i>pol</i> (∼1000 pb) sequences circulating in Cuba (<i>n</i> = 35), and in central (<i>n</i> = 71), western (<i>n</i> = 366), eastern (<i>n</i> = 10) and southern (<i>n</i> = 3) African countries.

<p>Branches are colored according to the origin of each sequence, as indicated at the legend (bottom left). Shaded boxes highlight the position of the major HIV-1 subtype G Cuban clade (G_CU). Key nodes with <i>a</i>LRT support values >0.80 (*) and ≥0.90 (**) are indicated. The tree was rooted using HIV-1 subtype A1 and B reference sequences (gray branches). The branch lengths are drawn to scale with the bar at the bottom indicating nucleotide substitutions per site.