Insulin-like growth factor 1 (IGF1) Intron 2 neighbour-joining tree from 4811 bp of phased sequence. Branch support (>50%) is based on 1000 bootstrap replications and shown as a percentage. Dashed lines indicate the location the small dog haplotype 3 was placed in the three constraint trees. Dog breeds are italicized while grey wolf populations are normal font and listed by geographic location.
Gray et al. BMC Biology 2010 8:16 doi:10.1186/1741-7007-8-16