The genome is unusual in having few transposable elements, although they were present in the evolutionary past (remains and fossils have been found) and evolved more slowly than those in fly-species.
O seu xenoma é pouco habitual porque ten poucos elementos transpoñibles, aínda que estes estaban presentes no pasado evolutivo (encontráronse restos inactivos) e evolucionaron máis lentamente que nas especies voadoras.