Worldwide map showing the distribution of chicken mitochondrial haplogroups. (a) Frequency of chicken mitochondrial haplogroups from South America: Bolivia (BOL), Brazil (BRA), Chile (CHL), Colombia (COL), Ecuador (ECU) and Peru (PER); Island Southeast Asia-Pacific: Indonesia (IDN), Philippines (PHL), Fiji (FJI), Solomon Islands (SLB), Vanuatu (VUT); East Asia: China (CHN) and Korea (KOR); Mainland Southeast Asia: Laos (LAO), Myanmar (MMR), Thailand (THA), Vietnam (VNM); South Asia: India (IND) and Bangladesh (BGD); Southwest Asia: Azerbaijan (AZE) and Turkmenistan (TKM); Europe (EUR) and Iberia (IBE). The colours in (a) correspond to the colours depicted in (b). (b) Median-joining network of the mitochondrial control region haplotypes found in South American populations. Haplotype 250 is from Easter Island.