Figure 1: Clustering of 34 Irish Travellers, 300 Settled Irish, and 828 British by fineStructure.
From: Genomic insights into the population structure and history of the Irish Travellers

(A) The first and second components of principal component analysis of the haplotype-based co-ancestry matrix produced by fineStructure analysis. Individual clusters are indicated by colour and shape. Individual Irish Travellers are indicated with black bordered shapes, with cluster shown in Legend. (B) The full fineStructure tree with the highest posterior probability, with cluster size and name, and broad branches shown.