Thanks for posting that, Tony! It's fascinating, judging by the abstract. Not only that, but as a historian I study the site of one of those early Spanish colonizations, St. Augustine, Florida, and one of the things I'm working on is a longitudinal genealogical study of the town between 1784 and 1821, called the Second Spanish Period. This could be very useful. Karen Packard Rhodes Middleburg, Clay County, Florida On 2/20/2015 4:54 PM, Tony LaLuzerne via wrote: > Here’s an article that may be of interest titled "The Genetic Ancestry of African Americans, Latinos, > and European Americans across the United States": > > Abstract: "Over the past 500 years, North America has been the site of ongoing mixing of Native Americans, European settlers, and Africans (brought largely by the trans-Atlantic slave trade), shaping the early history of what became the United States. We studied the genetic > ancestry of 5,269 self-described African Americans, 8,663 Latinos, and 148,789 European Americans who are 23andMe customers and > show that the legacy of these historical interactions is visible in the genetic ancestry of present-day Americans. We document pervasive > mixed ancestry and asymmetrical male and female ancestry contributions in all groups studied. We show that regional ancestry differences > reflect historical events, such as early Spanish colonization, waves of immigration from many regions of Europe, and forced relocation > of Native Americans within the US. This study sheds light on the fine-scale differences in ancestry within and across the United > States and informs our understanding of the relationship between racial and ethnic identities and genetic ancestry." > > http://www.cell.com/ajhg/pdf/S0002-9297(14)00476-5.pdf > > Tony L. > >