Figure 2: Median-Joining network based on 4,062 bp Y chromosomal sequence.
From: Discovery of lost diversity of paternal horse lineages using ancient DNA

The continental-scale origin of the ancient wild horses is shown by different colours (red: Eurasia; blue: North America). The 2,800-year-old domestic horse haplotype is shown in orange and sequences retrieved from NCBI GenBank in yellow. Haplotypes sharing the 4bp deletion are shaded in grey. Sample Abbreviations:1=ARZ-1-3, 2=JAL-292, 3=JAL-310, 4=YG 109.6, 5=MGVo1_niche3.3, 6=BL-O485,7=BL-O250, 8=BL-O728, 9=ML-O112.