Different approaches for the ascertainment of ASMs. The five panels show the results from STRUCTURE analyses for five different sets of 47 ancestry sensitive markers (ASMs) among 74 globally dispersed individuals from Africa (n = 25), Native American origin (n = 12), Asia (n = 14), and Eurasia (n = 23). To the right of each panel we indicate which statistical approach is used to identify each set of ASMs (see methods for more details). For each set of 47 ASMs, the likelihood of the data was maximal at K = 4 ancestral populations (clusters). Individuals are represented as vertical bars that are partitioned into to segments corresponding to their membership of the clusters indicated by the four different colours. Each colour reflects the estimated relative contribution of one of the four subgroups to that individual's genome and sum up to 100% (indicated at the Y-axis). Individuals were sorted according to their geographical origins (indicated below each group) after completion of the STRUCTURE analyses.