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1. • Guinea-Bissau and nearby countries in West Africa

     • But scientists note that the majority of black men with the hgA1 variant currently live in Guinea-Bissau and nearby countries in West Africa.
     zephr.newscientist.com/article/dn11018-genes-reveal-west-african-heritage-of-white-brits/

     Genes reveal West African heritage of white Brits | New Scientist

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   Where do black men with hga1 variant live?

   • But scientists note that the majority of black men with the hgA1 variant currently live in Guinea-Bissau and nearby countries in West Africa. Because many slaves from this area came to Britain beginning in the mid-16 th century, it is likely that the white men with the hgA1 variant have a black ancestor that arrived this way, researchers say.

   Genes reveal West African heritage of white Brits | New Scientist

   www.newscientist.com/article/dn11018-genes-reveal-west-african-heritage-of-white-brits/

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   Did white men with hga1 have a black ancestor?

   • Because many slaves from this area came to Britain beginning in the mid-16 th century, it is likely that the white men with the hgA1 variant have a black ancestor that arrived this way, researchers say. This ancestor could have been a first-generation immigrant African or one whose family had lived in Britain for generations.

   Genes reveal West African heritage of white Brits | New Scientist

   www.newscientist.com/article/dn11018-genes-reveal-west-african-heritage-of-white-brits/

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   Is hga1 a rare Y chromosome?

   • Mark Jobling at the University of Leicester, UK, and colleagues recruited 421 men who described themselves as British and analysed their genes as part of a survey of British Y chromosome diversity. To the researchers’ surprise, they found that one individual in the study carried a very rare Y chromosome, called hgA1.

   Genes reveal West African heritage of white Brits | New Scientist

   www.newscientist.com/article/dn11018-genes-reveal-west-african-heritage-of-white-brits/

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   Did the hga1 chromosome evolve in Britain?

   • “It’s so distinctive, it really sticks out like a sore thumb,” Jobling says of the chromosome’s unique sequence. He adds that it is virtually impossible for this sequence to have coincidentally evolved in Britain. The white British subject with the hgA1 variant, however, knew of no African family connection.

   Genes reveal West African heritage of white Brits | New Scientist

   www.newscientist.com/article/dn11018-genes-reveal-west-african-heritage-of-white-brits/

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3. www.newscientist.com › article › dn11018-genesGenes reveal West African heritage of white Brits | New Scientist

   www.newscientist.com › article › dn11018-genes

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   Jan 24, 2007 · But scientists note that the majority of black men with the hgA1 variant currently live in Guinea-Bissau and nearby countries in West Africa. Because many slaves from this area...

4. www.newscientist.com › article › mg19325883-500-westWest African roots found in white Brits' genes | New Scientist

   www.newscientist.com › article › mg19325883-500-west

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   Jan 24, 2007 · One man with an unusual surname stood out because his Y chromosome carried a gene variant called hgA1 previously found only in 28 black Africans.

5. www.ncbi.nlm.nih.gov › pmc › articlesAfricans in Yorkshire? - the deepest-rooting clade of the Y ...

   www.ncbi.nlm.nih.gov › pmc › articles

   We recruited 18 apparently unrelated men carrying this name (or a close variant spelling, carried by 50 individuals) and typed a set of 11 binary markers and 17 Y-STRs 15, supplemented with the binary marker M31, allowing us to identify hgA1.

   • Author: Turi E King, Emma J Parkin, Geoff Swinfield, Fulvio Cruciani, Rosaria Scozzari, Alexandra Rosa, Si-K...
   • DOI: 10.1038/sj.ejhg.5201771

   • Publish Year: 2007
   • Published: 2007/03

6. www.nature.com › articles › 5201771Africans in Yorkshire? The deepest-rooting clade of the Y ...

   www.nature.com › articles › 5201771

   We describe the presence of an hgA1 chromosome in an indigenous British male; comparison with African examples suggests a Western African origin.

   • Author: Turi E King, Emma J Parkin, Geoff Swinfield, Fulvio Cruciani, Rosaria Scozzari, Alexandra Rosa, Si-K...

   • Publish Year: 2007

7. www.sciencedaily.com › releases › 2007First Genetic Evidence Of Long-lived African Presence Within ...

   www.sciencedaily.com › releases › 2007

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   Jan 24, 2007 · The University of Leicester study, funded by the Wellcome Trust and published today in the journal European Journal of Human Genetics, found that one third of men with a rare Yorkshire surname...

8. phys.org › news › 2007-01-genetic-evidence-longStudy provides first genetic evidence of long-lived African ...

   phys.org › news › 2007-01-genetic-evidence-long

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   Jan 24, 2007 · The University of Leicester study, funded by the Wellcome Trust and published today in the journal European Journal of Human Genetics, found that one third of men with a rare Yorkshire surname...

9. pubmed.ncbi.nlm.nih.gov › 17245408Africans in Yorkshire? The deepest-rooting clade of the Y ...

   pubmed.ncbi.nlm.nih.gov › 17245408

   We describe the presence of an hgA1 chromosome in an indigenous British male; comparison with African examples suggests a Western African origin. Seven out of 18 men carrying the same rare east-Yorkshire surname as the original male also carry hgA1 chromosomes, and documentary research resolves them into two genealogies with most-recent-common ...