F_ST profiles for six genes showing signatures of natural selection. For each gene, F_ST is plotted on theY-axis, and chromosomal position in Kb is plotted on theX-axis. The genes shown here include guanine nucleotide exchange factor for Rap1 (GFR; (A)), tropomodulin 3 (TMOD3; (B)), apolipoprotein B (APOB; (C)), phosphoinositide-3-kinase, catalytic, β-polypeptide (PIK3CB; (D)), cytidine monophosphate-N-acetylneuraminic acid hydroxylase (CMAH; (E)), and oligophrenin 1 (OPHN1; (F)). The location of SNPs within each gene is denoted as boxes: introns (black), exons (open), 5′ UTR (grey), 5′ upstream (vertically striped), and 3′ downstream (hatched). Intron and exon numbers are noted within each box where appropriate.