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your ethnicty with dna doesnt start till couple hundred years back. Those living in United states are still too young
I'm not so sure about that. My ancestors have lived in the same part of Maryland since the 1780. I have had no admixture with anyone outside the county since one set of great-great grandparents moved here from Scotland in the 1880s, and only modest admixture with post independence immigrants (all German or British save one Jewish man) before that.
Ancestry is able to place me in the "Settlers of the Potomac Valley" group and the center of the circle they draw for the region is centered pretty much where I am sitting right now......the same place one of my ancestors had his farm in the late 18th century. 200+ years is plenty of time for a group of people to not only accumulate a unique set of DNA markers, picked up by tests like this, but also to self-ID as a group of people who share a common heritage among themselves, the start of ethno-genesis.
Last edited by westsideboy; 11-13-2017 at 05:06 PM..
I'm not so sure about that. My ancestors have lived in the same part of Maryland since the 1780. I have had no admixture with anyone outside the county since one set of great-great grandparents moved here from Scotland in the 1880s, and only modest admixture with post independence immigrants (all German or British save one Jewish man) before that.
Ancestry is able to place me in the "Settlers of the Potomac Valley" group and the center of the circle they draw for the region is centered pretty much where I am sitting right now......the same place one of my ancestors had his farm in the late 18th century. 200+ years is plenty of time for a group of people to not only accumulate a unique set of DNA markers, picked up by tests like this, but also to self-ID as a group of people who share a common heritage among themselves, the start of ethno-genesis.
The Genetic Communities are determined differently than the ethnicity percentages. Genetic Communities are established by looking at the DNA of your matches and your matches matches, so naturally you all share DNA. That doesn't mean Americans have developed a unique set of DNA markers. If we had, there would be an "American" ethnicity category (differing from Native American, of course) and there isn't.
The Genetic Communities are determined differently than the ethnicity percentages. Genetic Communities are established by looking at the DNA of your matches and your matches matches, so naturally you all share DNA. That doesn't mean Americans have developed a unique set of DNA markers. If we had, there would be an "American" ethnicity category (differing from Native American, of course) and there isn't.
You're right for most Americans, and most American regions. Not so where I live. I mean, I give a DNA sample, and the service says "Your ancestors in America lived here," and draws a circle right around where I am sitting. It isn't a parlor trick.
My region has a strong founder effect, and only modest admix since then. Sure, lots of those cousins have moved on, but many have stayed. My grandparents were distant cousins, my parents were distant cousins. For me personally, Ancestry did a much better job figuring out my American heritage story than it did with my European ethnicity percentages, and it is because my cousins and I share DNA markers that pin us to a very specific place in America, it is pretty cool.
You're right for most Americans, and most American regions. Not so where I live. I mean, I give a DNA sample, and the service says "Your ancestors in America lived here," and draws a circle right around where I am sitting. It isn't a parlor trick.
You're completely missing the point. Brownbagg was talking about ethnicity percentages. You're talking about Genetic Communities. They are calculated differently. They are different things, yet you are applying how Genetic Communities are determined to how ethnicity percentages are determined.
You're completely missing the point. Brownbagg was talking about ethnicity percentages. You're talking about Genetic Communities. They are calculated differently. They are different things, yet you are applying how Genetic Communities are determined to how ethnicity percentages are determined.
The point is my spit can tell you where I live, and where all of my ancestors have lived for over 130 years, most going back a century before that.
Call it "ethnicy" call it "Genetic Community" call it strawberry ice cream if you want. The point is my DNA, and that of my cousins, is traceable to about a 1,200sq mile region on this continent with a high degree of certaintity. The idea that Americans haven't been here long enough to ID specific gene markers with specific communities isn't true for all us.
i bought this book from ancestry couple years ago, on my family surname. It said i was from here, they had this job, they was this and they was that.
the book was 100% wrong for my family, but they was pulling the genectic community I guess. or it was a palor trick
Genetic Communities haven't been around that long and Ancestry have never produced books based on Genetic Communities. It sounds like it's a generic surname origins, nothing to do with DNA, and as far as I know, Ancestry have never produced those. You are mistaken.
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