A novel hybrid dysgenesis system in Drosophila melanogaster suggests that transposons may contribute to speciation
It is an open question whether transposable elements (TEs) can cause postzygotic isolation, an important step towards speciation. In hybrid dysgenesis (HD), the offspring of crosses between males having a TE and females lacking it may have reduced fitness, e.g., due to atrophied ovaries. The offspring of the reciprocal crosses are free of symptoms. Such fitness reductions may represent a barrier…
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