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Table 1 Element distribution and insertion time

From: Evolutionary dynamics of the LTR retrotransposons roo and rooA inferred from twelve complete Drosophila genomes

  roo rooA
Organism number of copies/func. copies solo-LTR median age in myr number of copies/func. copies solo-LTR median age in myr
D. simulans 1/- 102 - 3/- 117 1.18
D. sechellia 16/3 113 0.15 - 138 -
D. melanogaster 107/50 558 0 - 55 -
D. yakuba 7/- 77 0.29 18/- 3335 1.2
D. erecta 1/- 47 0.36 44/1 482 0.16
D. ananassae 5/1 395 0 - - -
D. pseudoobscura - 33 - - - -
D. persimilis 1/- 170 1.19 - - -
D. willistoni 14/- 711 0 - - -
D. mojavensis 12/1 116 0.09 1/- 35 1.56
D. virilis - - - - - -
D. grimshawi - - - - - -
total 164/55 2322 0 66/1 4162 0.24
  1. For each genome (column 1 from the left), column 2 shows the total number of identified roo elements, with the number of functional copies after the slash. Column 3 shows the number of identified solo-LTRs, which have a similarity of at least 70 percent and a length difference of less than 10 percent to a roo LTR sequence. The calculation of the average insertion time (column 4) is based on the divergence between the two LTR sequences of every element. Columns 5–7 represent the same data for the rooA element; myr: million years; func: functional;