HOTSPOTS. “The localisation of recombination events differs between species. In many species, recombination occurs in localised regions known as “recombination hotspots” of around 1-2kb in length, although some species (e.g., C. elegans and Drosophila) lack well-defined hotspots.”
http://biorxiv.org/content/biorxiv/early/2016/04/28/050831.full.pdf