title: A novel Y-chromosome variant puts an upper limit on the timing of first entry into the Americas.
authors.forename: Mark
authors.initials: M
authors.lastname: Seielstad
authors.forename: Nadira
authors.initials: N
authors.lastname: Yuldasheva
authors.forename: Nadia
authors.initials: N
authors.lastname: Singh
authors.forename: Peter
authors.initials: P
authors.lastname: Underhill
authors.forename: Peter
authors.initials: P
authors.lastname: Oefner
authors.forename: Peidong
authors.initials: P
authors.lastname: Shen
authors.forename: R Spencer
authors.initials: RS
authors.lastname: Wells
mesh_terms: D000569:Americas; D041322:Chromosomes, Human, Y; D002910:Chronology as Topic; D004641:Emigration and Immigration / Q000266:history*; D005787:Gene Frequency; D014644:Genetic Variation; D049690:History, Ancient; D006801:Humans; D018895:Microsatellite Repeats; D009154:Mutation; D011110:Polymorphism, Genetic; D020641:Polymorphism, Single Nucleotide