Fig. 3From: Variation in NAT2 acetylation phenotypes is associated with differences in food-producing subsistence modes and ecoregions in AfricaMap showing the frequency distributions of predicted NAT2 phenotypes in African populations screened for sequence variation in the coding-exon (pie charts are proportional to sample size). Map created with the QGis open source software [98], with climatic zones defined according to [99]Back to article page