Identical by descent/50/en
From ISOGG Wiki
Regions where excess IBD is detected by three IBD methods among the control populations. Regions that give rise to excess IBD inferences in GERMLINE (A–C), fastIBD (D–F), and ISCA (G–I) IBD. Black and red shading denotes degree of excess IBD detected. Source: www.plosgenetics.org/article/info%3Adoi%2F10.1371%2Fjournal.pgen.1004144