Genetic history of indigenous peoples of the Americas primarily focus on Human Y-chromosome DNA haplogroups and Human mitochondrial DNA haplogroups. "Y-DNA" is passed solely along the patrilineal line, from father to son, while "mtDNA" is passed down the matrilineal line, from mother to offspring of both sexes. Neither recombines, and thus Y-DNA and mtDNA change only by chance mutation at each generation with no intermixture between parents' genetic material. Autosomal "atDNA" markers are also used, but differ from mtDNA or Y-DNA in that they overlap significantly. AtDNA is generally used to measure the average continent-of-ancestry genetic admixture in the entire human genome and related isolated populations. COUNT 5
QSN1 What does the genetic history of indigenous peoples of the Americas primarily focus on? ANS1 Human Y-chromosome DNA haplogroups QSN2 How is Y-DNA passed along? ANS2 patrilineal line QSN3 What is the only way that Y-DNA and mtDNA change? ANS3 chance mutation QSN4 Which type of DNA is passed from the mother to offspring of both genders? ANS4 mtDNA QSN5 What is AtDNA generally only used to measure? ANS5 average continent-of-ancestry