Fig. 2
From: Copy number variation in human genomes from three major ethno-linguistic groups in Africa
Venn diagram showing counts of CNVR shared between populations. a All CNVR from Niger Congo A (NCA), Niger Congo B (NCB) and Nilo-Saharan (NS) ethnic groups. CNVR overlapping 5 kb genomic regions were plotted for each population. A majority of the CNVR are shared between populations, but Nilo-Saharans appear to have the least CNVR, with most of them shared with the Niger Congo A and Niger Congo B. b Sharing of novel CNV regions between populations. Most novel CNVR are unique to individual populations studied whereas others are shared. To enable comparison, the genome was divided into 5 kb regions and regions with novel CNVR in each of these regions for each population were compared for overlaps