The assessment of DNA markers, both mitochondrial DNA (women) and Y-DNA (men), to determine lineage and ethnic origin.

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What is the significance of “shared centiMorgans”?

I've had my autosomal DNA tested and the site I've used (FamilyTreeDNA) tells me that I have a "Shared centiMorgan length" of 48.08 with my closest match and the "longest block" is 28.89. FamilyTree ...
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What's the best way two people that share a surname can determine they're not closely related?

My girlfriend and I both share the same last name and our families claim they are both from the same Korean surname "clan". This is a huge sticking point for her father. I know so far with certainty ...
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“Resolution” of DNA testing

What is the spatial/cultural "resolution" of DNA testing for genealogical purposes? How finely can it be used to estimate where a particular person's ancestors were from? I am interested in testing ...
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Are there mtDNA societies like there are surname societies for Y-DNA?

Males get their Y-DNA from their father and both males and females get their mtDNA from their mother. Because surnames generally follow the Y-DNA, groups of individuals with the same Y-DNA can find ...
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101 views

Can DNA test prove an African ancestry?

Are DNA tests reliable enough to verify ancestry from Africa? How many generations would appear in such results, since if we go back enough we'll find that human race generated in the African ...
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Companies that test foreign DNA for genealogical matters?

Inspired by another question, I got interested in companies that provide DNA tests for genealogy matters. The problem is that the samples would be collected and submitted from Brazil, looking for ...
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What factors should I consider when choosing a DNA-testing service?

I and my half-sister are considering having DNA testing done, for the following primary reasons: To attempt to identify my sister's paternal line. We have no information about her father, who may be ...
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Where can I list my DNA in Europe (England) to improve the chances of making a match with other researchers?

My DNA is listed on several USA sites. Does any one know of similar sites in Europe (England) where I can try to make a match?
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Requesting help with Y-DNA studies of the Bonnell Family that lived in Ireland and came to Pennsylvania in the 1700's [closed]

I'm interested in Y-DNA studies pertaining to the "Bonnell" Family. The line of interest resided in Ireland and seems to be well documented in the USA through the 1700's. My Ancestor was presumably ...
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What DNA data is important to record?

When DNA testing is done for genealogical purposes, they send back reports with all sorts of incomprehensible information. I want to save the important information with the person in my genealogy ...
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277 views

Can DNA testing prove that I have Native American ancestry?

I saw on The Generation Project where a man took a DNA test that showed he was some percentage Native American. Or was the chance that he as Native American. I don't remember. Anyway, what about it. ...
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How can DNA testing aid me in my genealogy research?

My basic understanding of DNA testing is that it can tell you where your ancestors came from. How can just knowing the ethnic breakdown of my ancestors help me? What if I already know where my ...