Figure 3.

Transpositional activity of horizontally transferred LTR-RTs. Concentric circles represent the time scale for insertion dates: from 6 My (center) to present (outer circle). For each HTT, the red line illustrates the estimated date of the transfer (based on percent identity between the LTR-RTs involved in the transfer). For each species, the insertion date of each element (illustrated by the percent identity between both its LTR sequences) is represented as blue circles. Graphs are plotted with R (library plotrix) and edited with Illustrator.