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the Saxons

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« on: May 02, 2007, 03:54:31 pm »


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A Y Chromosome Census of the British Isles


Cristian Capelli 1, 8, Nicola Redhead 1, Julia K. Abernethy 1, Fiona Gratrix 1, James F. Wilson 1, Torolf Moen 3, Tor Hervig 4, Martin Richards 5, Michael P. H. Stumpf 1, 9, Peter A. Underhill 6, Paul Bradshaw 7, Alom Shaha 7, Mark G. Thomas 1, 2, Neal Bradman 1, 2 and David B. Goldstein 1, , 
1 Department of Biology, Gower Street, London WC1E 6BT, United Kingdom
2 The Centre for Genetic Anthropology, University College London, UK, Gower Street, London WC1E 6BT, United Kingdom
3 Trondheim University Hospital, N-7006, Trondheim, Norway
4 Haukeland University Hospital Blood Bank, N-5021, Haukeland, Denmark
5 Department of Chemical and Biological Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom
6 Department of Genetics, Stanford University, Stanford, CA 94305-5120, USA
7 BBC Archaeology, London, United Kingdom
8 Istituto di Medicina Legale, Università Cattolica di Roma, Roma I-00168, Italy
9 Department of Zoology, Oxford University, Oxford OX1 3PS, United Kingdom
Received 29 October 2002;  Revised 7 March 2003;  accepted 16 April 2003 Published: May 27, 2003  Available online 29 May 2003.





Abstract

The degree of population replacement in the British Isles associated with cultural changes has been extensively debated [1, 2 and 3]. Recent work has demonstrated that comparisons of genetic variation in the British Isles and on the European Continent can illuminate specific demographic processes in the history of the British Isles. For example, Wilson et al. [4] used the similarity of Basque and Celtic Y chromosomes to argue for genetic continuity from the Upper Palaeolithic to the present in the paternal history of these populations (see also [5]). Differences in the Y chromosome composition of these groups also suggested genetic signatures of Norwegian influence in the Orkney Islands north of the Scottish mainland, an important center of Viking activities between 800 and 1300 A.D. [6]. More recently, Weale et al. [7] argued for substantial Anglo-Saxon male migration into central England based on the analysis of eight British sample sets collected on an east-west transect across England and Wales. To provide a more complete assessment of the paternal genetic history of the British Isles, we have compared the Y chromosome composition of multiple geographically distant British sample sets with collections from Norway (two sites), Denmark, and Germany and with collections from central Ireland, representing, respectively, the putative invading and the indigenous populations. By analyzing 1772 Y chromosomes from 25 predominantly small urban locations, we found that different parts of the British Isles have sharply different paternal histories; the degree of population replacement and genetic continuity shows systematic variation across the sampled areas.
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