Human migrations: the two roads taken.
America was peopled from Asia by at least the end of the last ice age, but the exact timing of entry and the composition of the source population are unclear. A new analysis of two rare mitochondrial haplogroups suggests two separate Asian migrations into the Americas, indicating simultaneous but independent Asian source populations for early American colonists.
O'Rourke
Dennis H
DH
Department of Anthropology, University of Utah, 270 S. 1400 E., Rm. 102, Salt Lake City, UT 84112, USA. orourke@anthro.utah.edu
D000569:Americas; D001208:Asia; D004272:DNA, Mitochondrial / Q000235:genetics*; D004641:Emigration and Immigration; D019143:Evolution, Molecular; D005787:Gene Frequency; D014644:Genetic Variation; D005843:Geography; D006801:Humans; D017422:Sequence Analysis, DNA
D004272:DNA, Mitochondrial