Inversion detection task.

We evaluated three methods (PCA with clustering, PC-SNP association testing, and Cluster-SNP association testing) on the inversion detection task (is an inversion present?) using our three benchmark test cases (negative, positive from a single population, and positive from multiple populations). For each chromosome arm used, we indicated known inversions and whether the inversion was detected by a given method. The D. melanogaster 3R chromosome arm has three mutually-exclusive inversions, which we list separately.