Further to my last post some information on the research.
The research was carried out to map the diverse genetic ancestry of North and South
America. By using halotype DNA which is a cluster of tightly-linked genes on a chromosome
that are likely to be inherited together, using more than 4,000 DNA samples.
Then the Oxford University team grouped subsets of people in Africa and Europe who were
genetically similar. They were able to separate European genomes into 37 groups. They
then compared the data with the genomes from 2,500 people of mixed ancestry from the
The method helped them identify detailed ancestry sources, such as Basque DNA patterns
from Spain, rather than France. Overall the group, which also included researchers from
University College London and the Universita' del Sacro Cuore of Rome, used DNA
sample from 64 different populations. They included people in Barbados, Columbia, the
Dominican Republic, Ecuador, Mexico, Puerto Rico and African-Americans in the USA.
The most common European genetic source in African-Americans and Barbadians comes from the
UK. It would appear that the thrust of the research was more interested in how both the
African and European continent impacted upon the US with the UK results being a mere
sideshow to the overall project.