Ottar N Bjørnstad1,2, Katriona Shea1, Martin Krzywinski3, Naomi Altman4. 1. Department of Biology, The Pennsylvania State University, State College, PA, USA. 2. Department of Entomology, The Pennsylvania State University, State College, PA, USA. 3. Canada's Michael Smith Genome Sciences Centre, Vancouver, British Columbia, Canada. martink@bcgsc.ca. 4. Department of Statistics, The Pennsylvania State University, State College, PA, USA.