Fig. 1.—

Single simulation of the temporal dynamics of a TE family with a constant transposition rate (
per copy and per time step), and no deletion (“pure birth” model). X axes are oriented from past to present in reconstructed dynamics (A, B, C) (
corresponds to the start of the transposition history, each bar stands for four successive generations). With a constant transposition rate per copy (dashed line on A), the number of copies increases exponentially. This increase is reflected by the log-linear pattern of the LTT plot (C), which can be used as a basis for reconstructing the dynamics of the TE family.