Structure analysis of 318 Plasmodium falciparum microsatellite haplotypes from Papua New Guinea. Individual ancestry coefficients for A) all haplotypes for K = 3 and K = 4, B) inland and coastal datasets and C) catchments. Each bar represents the proportion of each haplotype with ancestry in the defined clusters, each cluster being indicated by a different colour. Black borders around groups of haplotypes represent the different villages. The number of clusters (K) associated with each plot is indicated along with the rate of change of K (ΔK).