Both individuals represent the northernmost discovery of these mtDNA lineages .
Both individuals show that the mtDNA diversity in the ancient population is higher than in the modern , lending credence to the Beringia Standstill Hypothesis .
Both individuals represent the northernmost discovery of these mtDNA lineages and show that the mtDNA diversity in the ancient population is higher than in the modern , lending credence to the Beringia Standstill Hypothesis .