Native male founder lineages of America

RAMALLO V; MUZZIO M; SANTOS M R; MOTTI J M B; JURADO MEDINA L S; BRAVI CM; BAILLIET G

Current Research in The Pleistocene

Texas A&M University

Año: 2011 p. 29 - 32

8755-898X

ESTE TRABAJO CORRESPONDE AL CAMPO DISCIPLINAR DE LA ANTROPOLOGÍA FÍSICA (DISCIPLINADESAGREGADA 5701-ANTROPOLOGÍA FÍSICA), QUE NO SE ENCUENTRA ENTRE LAS OPCIONES A ELEGIREN LA PLANILLA DE "AREA DEL CONOCIMIENTO".Native-American males carry a Y-chromosome lineage characterized by one base-pair polymorphism (M3). All populations from Alaska to the Magellan’s Strait present this lineage in frequencies higher than 60%. This lineage was considered the “founder”, but further information shows that M3 occurred in America, or Siberia shortly before migration to America and so it is actually considered autochthonous. It belongs to the Q haplogroup, shows derivate state for M242, M346, and M3 polymorphisms, and is named subhaplogroup Q1a3a. Another lineage, paragroup Q1a3*, entered America showing derived states for M242 and M346 polymorphisms, and ancestral for M3. It is present in Eurasia and is more frequent in North than in South America. Though found at low frequency, it has not been possible to rule out a genetic bottleneck occurrence during the migration to South America.