FIG 6.

ERV-GTE orthologous insertions in Chiloscyllium and Seriola. (A) ERV-GTE integration events during fish evolution. The species tree was constructed with TimeTree. Different classes are marked with colored fonts. Arrowheads indicate the events of ERV-GTE integrations. Integration events are labeled numerically. Dotted lines indicate only the genetic relationship and do not imply the divergence time of these species. (B) Examples of orthologous insertions for ERVs-GTE. Rectangles from left to right represent 1,000-bp flanking sequence, 5′ LTR, internal genes of an ERV, 3′ LTR, and 1,000-bp flanking sequence, respectively. Dashed boxes indicate missing corresponding regions.