Haplotype genealogies for three fragments of nuclear-encoded single-copy genes, RAG-1 (474 nucleotides; 37 samples), SACS (960 nt; 36 samples) and KIAA1239 (726 nt; 37 samples). Sequences were phased previous to the analysis, and each sample is therefore represented by two sequences in each network. Coloring of samples is according to their assignment to main mitochondrial lineages in Figure 1. Circles represent haplotypes, with size proportional to allele frequency. Dots on the branches indicate the number of mutational steps between haplotypes.