Genome map of Yersinia pestis bacteria, computer artwork. This map was created by rendering all the DNA strands that make up the bacteria's genome into a planet-like sphere (centre). The sphere is superimposed onto a two-dimensional genome map and line drawings. Yersinia pestis is responsible for causing bubonic plague. Genes responsible for its pathogenesis are represented by dark volcano-like peaks (middle). This map is one of a series of 'genomic planets' created by German biologist Thomas Fester.