Questions tagged [dna]

For questions about using DNA to further knowledge of family history, relationships, ethnic origin, and overall ancestry. Most common tests include Y-DNA, mitochondrial DNA, and autosomal DNA.

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4
votes
4answers
105k views

How long do results typically take for Ancestry DNA test?

I ordered a family DNA test from Ancestry.com and sent it in for lab processing, they received it and the web page shows: Test in Process: Lab processing began on 02/26/2015 It is now four days ...
7
votes
3answers
22k views

How to interpret a reasonable X DNA Match, but no shared cM Autosomal result on GEDMatch?

I recently uploaded one of the Autosomal DNA results I manage to GEDMatch.com and ran the X-Match routine and came up with a puzzling result. The strongest result by far on the test has 37.2 shared ...
4
votes
1answer
860 views

How to effectively communicate your tree for DNA Matches in first contact emails?

In genealogy in general there is a lot of ‘cousin hunting’ but in DNA Genealogy where people do not necessarily also have published trees for you to explore but you are reasonably close matches you ...
11
votes
3answers
2k views

Generational Loss of Data with DNA Testing

I have personally done the Y-DNA, the add-on Y-block with FamilyTreeDNA, mtDNA, and new FamilyFinder/AncestryDNA (via Ancestry) which i plan in transferring to FamilyTreeDNA just recently as a base ...
4
votes
2answers
325 views

Y–STR Male Lineage DNA Testing

My father died never knowing who his biological father was. His birth certificate has no father mentioned and whenever we speak to his mother who is still alive, she will not reveal any information. ...
2
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2answers
187 views

Which type of DNA test?

I am currently starting to research my family history and I am new to the process. How should I go about the DNA testing process? I would like to know my ancestry (80% Scandinavian, 16% European, ...
2
votes
2answers
861 views

Interpreting AncestryByDNA results

My AncestryByDNA testing results are: 72% European, 16% Sub-Saharan Africa, and 12% Indigenous American. This suggests Iberian origins. However, all my known ancestors are Irish and most still live ...
8
votes
1answer
1k views

Working with autosomal DNA results

I have the automsomal DNA results for myself, 3 full sisters and 1 half-sister. We all share a mother, and we all tested with familytreeDNA. Our results are uploaded to gedmatch.com. Our parents are ...
3
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1answer
185 views

DNA detection of indigenous grandparents

I have French Canadian Metis grandmothers, but no direct maternal or paternal link - will dna testing recognise the haplogroup?
7
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6answers
37k views

Finding haplogroup through raw DNA data?

I just got my results from AncestryDNA. What are some ways to find my haplogroup through my raw DNA data?
7
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3answers
4k views

How do I find out which group/population/part of East Asia my ancestors are from?

AncestryDNA says I am 100% East Asian. Can I use my raw DNA data to find out which specific part of East Asia my ancestors come from?
5
votes
1answer
3k views

Can I get genealogical DNA-testing done on an old blood stain?

My sister has the wallet my father was carrying when he died in a road accident in 1969, complete with resultant blood-stains. Is there a way to do DNA-testing from this blood-testing. What sorts of ...
7
votes
1answer
4k views

What DNA test does 23andMe perform?

What DNA test does 23andMe perform? I can't find it stated anywhere on the website. The FamilySearch Wiki appears to imply that they perform the autosomal test and use that to infer Y-DNA and mtDNA ...
8
votes
4answers
7k views

Why would I export my raw DNA data?

23andMe, AncestryDNA, and Family Tree DNA all allow you to export your raw DNA results. What is the advantage of doing this? Is there anywhere I can import it for additional analysis?
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0answers
48 views

Reliability of genetic tests [duplicate]

I have been considering getting a genetic test to get an idea of where my genes suggest my family has been. How reliable are these types of tests particularly as my ancestry seems to be spatially ...
5
votes
4answers
280 views

Jacob Fisher and Sarah Hodges (married in 1773 in Sharon, MA) - who were their childen?

Page 27 of the Sharon, Massachusetts Vital Records show Jacob Fisher and his wife Sarah had a son Jacob born 30 Apr 1776: Jacob, s. of Jacob and Sarah, Apr. 30, 1776 Page 94 of those records show a ...
10
votes
3answers
37k views

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 ...
8
votes
1answer
237 views

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 ...
8
votes
3answers
315 views

“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 ...
6
votes
1answer
134 views

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 ...
9
votes
1answer
561 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 ...
5
votes
2answers
146 views

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 ...
8
votes
2answers
312 views

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 ...
5
votes
3answers
133 views

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?
11
votes
4answers
327 views

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 ...
15
votes
1answer
4k views

Proving Native American ancestry using DNA testing?

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. Can a DNA test prove that I have Native ...
17
votes
1answer
662 views

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 ...

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