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Science 26 November 2004:
Vol. 306. no. 5701, p. 1433
DOI: 10.1126/science.306.5701.1433m
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In an international collaboration of more than 15 museums, Shapiro et al. (p. 1561; see the news story by Pennisi) used mitochondrial DNA sequences from more than 350 late Pleistocene and Holocene bison bones to record evolutionary processes in real-time throughout the late Pleistocene. The genetic diversity of Beringian bison populations underwent a catastrophic decline immediately before the Last Glacial Maximum, well ahead of the arrival of humans in the New World. Old World steppe bison are all descended from a re-invasion from the New World around 90,000 to 120,000 years ago, and New World bison are descended from a small population of bison isolated to the south of glacial ice barriers.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)