Figure 2

Frequency of mtDNA haplogroups present in the Aleutian Islands determined by restriction fragment length polymorphisms and hypervariable segment-1 sequences, adapted from Crawford et al.[28]. Only haplgroups A (shown in blue) and D (shown in orange) are present in the Aleutian Islands, whereas haplogroup C (shown in yellow) and other mtDNA haplgroups (shown in green) are found on the Alaskan mainland and Siberia.