<documents_info>Blood Types and Human Origins,The Genetic History of Ice Age Europe,Genes,Peoples,and Languages,Who We Are and How We Got Here: Ancient DNA and the New Science of the Human Past,A Brief History of Everyone Who Ever Lived: The Stories in Our Genes</documents_info>
<query>How has the study of ancient DNA revolutionized our understanding of human migration patterns?</query>
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<documents_info>Blood Types and Human Origins,The Genetic History of Ice Age Europe,Genes,Peoples,and Languages,Who We Are and How We Got Here: Ancient DNA and the New Science of the Human Past,A Brief History of Everyone Who Ever Lived: The Stories in Our Genes</documents_info>
<query>How has the study of ancient DNA revolutionized our understanding of human migration patterns?</query>
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assistant
How has the study of ancient DNA revolutionized our understanding of human migration patterns?
Blood Types and Human Origins,The Genetic History of Ice Age Europe,Genes,Peoples,and Languages,Who We Are and How We Got Here: Ancient DNA and the New Science of the Human Past,A Brief History of Everyone Who Ever Lived: The Stories in Our Genes