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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Explanation of YFull Raw Data Statistics and Impact on Test Result Interpretation

YFull displays several statistics about the BAM / Full Genomes sample used to create the YFull report. Unfortunately though there is no explanation of what the statistics really man in terms of ...
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1answer
40 views

Is this adopted DNA match my niece or half sibling?

The adoptee and I have an autosomal total segment of 2138.8 cM the largest segment is 122.6 cM. The X-DNA is 115 total with the largest segment at 95. My son matched the adoptee with autosomal ...
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1answer
46 views

Half sisters or aunt/niece relationship?

I do not know who my father is and a woman (who also doesn't know who her father is) recently came up matching me on Ancestry.com as a close relative. She and I both uploaded our raw data to ...
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2answers
172 views

Determining if an autosomal and X-DNA match is my half-sibling?

I am adopted and have info on my maternal side, but not paternal. I recently got a match through AncestryDNA with someone saying we were close relatives. This man and I share 2086 centiMorgans in ...
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2answers
65 views

Is the Autosomal DNA testing ever wrong on relationships?

I have done the Autosomal DNA test through Ancestry.com and uploaded it gedmatch.com. In Ancestry.com I matched several people that would be 1st or 2nd cousins. I also matched with them on ...
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1answer
53 views

Determining if match is paternal or maternal?

I am trying to understand my Gedmatch results for a female that Ancestry.com lists as a second cousin. We have a 112.4 cM X-DNA match and a 224 cM autosomal match. Does this validate that it is ...
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60 views

Finding birth details of baby abandoned in New York, 1938?

I am trying to determine the background of my deceased wife. She was left in Central Park N. Y. on a bench in 1938. She is deceased as of 2001. We had two daughters, and one daughter has tested most ...
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2answers
109 views

How much DNA would match a 5th cousin once removed?

I have 5 autosomal DNA tests (from cousins and siblings of each other) that are theoretically all 5th cousins, once removed, from another DNA test. Using GED Match autosomal compare, I found these ...
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2answers
91 views

Is it possible to inherit the physical look of one ancestor specifically?

My family and I are Swiss, but my dad has a very Mediterranean look. His skin tends to be copper-coloured, he has very dark and very curly hair. This is especially obvious in photographs where he ...
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1answer
77 views

Why would Native American Ethnicity not show up in Autosomal DNA results?

My 3rd great grandmother was Muskogee. I have no Native American DNA according to ancestry.com, yet my DNA matches also share this ancestor in our family trees. Why, if we match DNA-wise and ...
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1answer
70 views

My Father passed away - next test(s) on what remains of his DNA sample?

I posted this general question over at the forum on FamilyTreeDNA. Though I received a reply, there is still no answer to my question, so I thought I'd try my luck at posting here. Anyhow, in early ...
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2answers
80 views

Understanding chromosomes and centiMorgans

I am very new to this so please be patient with me. I had a DNA test via Ancestry which didn't tell me very much and so I uploaded the data to GEDmatch. My top 3 matches are: A:11 chr matches, ...
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1answer
57 views

Is there a tool to generate a parent's DNA sequence from their children's?

I have the DNA (via Ancestry DNA) of a mother and 3 of her children, one son and two daughters. I know I can get an approximation of the father's Y-chromosome from his son. Is there a tool to ...
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0answers
38 views

How can you use FamilyTreeDNA's Search tool to contact matches / find contact information?

How can you use FamilyTreeDNA's Search tool to contact matches / find contact information? I have been continually challenged (as described in the challenges below) by trying to figure out how to use ...
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7answers
198 views

DNA Features of Genealogy Software

Have any traditional genealogy software programs that people use for recording their genealogy research added any features to support DNA research? I know there are a lot of DNA utility programs out ...
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1answer
54 views

ISOGG Y-DNA Haplogroup Tree download

On isogg website (http://isogg.org/tree/ISOGG_YDNATreeTrunk.html) I only found the html-based version of a Y-dna tree, that is not very easy to use. I want to download in to my personal computer and ...
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1answer
61 views

What GEDCOM tag should the DNA Haplogroup be stored?

I was reviewing the GEDCOM 5.5 specification and I am not clear as to what field should be used to store the basic Haplogroup information for an individual from DNA testing as described in What ...
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110 views

According to my family DNA what is my true ethnicity? [duplicate]

My maternal grandmother (b. 1911/d. 1940) was of mixed race (white father and black mother, her father left and she was raised by her mom) Her husband (my maternal grandfather) was born in the 1890's ...
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2answers
86 views

Making Research Plans for studying the Genetic Genealogy of an Adoptee?

I have accounts on 23andme, gedmatch, ftdna, and ancestry.com's ancestrydna (all autosomal at this point). I also, even though I'm adopted (from bulgaria, have the full name, most recent address (as ...
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64 views

Autosomal DNA Chromsome Browser - Is there such a thing as a 'family trait' of shared segments?

I realize the passing of genes is approximately 50/50 (reference Generational Loss of Data with DNA testing) with each generation and which genes are passed are commonly referred to as 'random' based ...
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1answer
220 views

What settings to use in GedMatch to confirm a seventh generation relative sharing DNA?

I have a relative, Nancy Ann Trigg, who is 7 generations removed from me, so I expect I have one part in 2^7 (128) of her DNA in my autosomal DNA test. I want to confirm this relation and found ...
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75 views

What does it mean for two DNA half-matches to not match each other?

I'm looking at my gedmatch.com kit A951428 and found close matches at the same overlapping location of chromosome 3: Kit Chr Start Pos End Pos cM SNPs F236166 3 25,435,600 ...
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1answer
131 views

How do I determine our common ancestor?

I'm trying to find a match for DNA that is narrowed down to go through my dad's line and another person's paternal line. I'm thinking if I could compare our fathers' pedigree surnames it might reveal ...
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1answer
93 views

How to read DNA matches across multiple related people to a 3rd party?

I have autosomal tests for myself, my sister, a cousin through my dad's sister, and my mother at Ancestry.com I have a third party that is matched to myself, my sister, and my mom, but not my cousin ...
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1answer
115 views

Template or Tool for Comparing Y-DNA Results

I am looking for a tool, preferably an excel template, I can run on my computer that I can use for comparing Y-DNA results across multiple types of Y-DNA tests. I realize some version of this exists ...
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1answer
79 views

Why doesn't the haplogroup K2b2 appear on MitoSearch.org?

I have a mtDNA test for my mom at FamilyTreeDNA.com and the results list her Haplogroup as being K2b2, however, when I go to publish a http://www.mitosearch.org/ entry, the available Haplogroup does ...
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1answer
128 views

Finding my Great-Grandfather when DNA test not conclusive?

I am from Japan and I have been trying to identify my great-grandfather who was British. For more background these are two questions that I have asked here previously: Finding UK record(s) of ...
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2answers
208 views

X DNA Interpretation

I guess I need a "dumbed down" explanation of these things, since I don't understand the explanations I've read. First, I have a 3rd cousin match from Ancestry who uploaded his info for me on ...
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3answers
263 views

Determining where particular parts of ethnicity percentage from DNA come from in family?

I completed a DNA test, and the results stated that I am 77% African 20% European 2% Native American and 1% Asian. From the results of this test, is there anything in the results that would tell me ...
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1answer
157 views

What would the starting shared cM number be for abnormally close relationships in Autosomal DNA test?

I have seen in the examination of family trees where individuals sharing a great grand parent marry and have children, somewhat commonly in pre-American Civil War, which I would think would create ...
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1answer
311 views

Is ancestry.com DNA test accurate with respect to native american descent?

Both myself and my wife believe we are descendants (each on the order of 1/16) of native americans, yet for the Ancestry.com autosomal DNA test, the ethnicity estimate shows nothing for native ...
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1answer
476 views

What is considered a strong match on a Big-Y DNA test?

I have done Big-Y on FamilyTreeDNA for a single individual and considering others as well as using the YFull interpretation service without fully understanding how to use it because I wanted to ...
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3answers
82 views

Forensic Y-STR DNA test provider that can provide results at greater than a Y-37?

I am trying to research a family line that shares a name, but not sure if anywhere in the distant or near past we share a common ancestor and both sides are interested in doing a Y-DNA test, we just ...
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1answer
470 views

Genetic Distance to Generations Calculation for Y-STR DNA tests

As a follow-up to the Q&A on Generational Loss of Data with DNA Testing, which described generational detail loss really well for Autosomal, I am now looking for a calculation or some basic ...
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1answer
176 views

How likely is it that ftDNA made a mistake about my y-haplogroup?

Context I bought a National Geographic Geno 2.0 kit, tested by FamilyTreeDNA, and it seems like I'm positively of the G2a haplogroup. This (statistically) disagrees with both where my recent ...
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1answer
97 views

Calculating the relationship from the RAW autosomal result file between two individuals?

My question is about the Ancestry Genealogy tests (Autosomal DNA tests) being offered. Suppose a consume DNA testing service company, like 23andMe/Ancestry.com/FamilyTreeDNA, extracts two people's ...
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4answers
12k 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 ...
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2answers
3k 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 ...
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3answers
514 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 ...
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2answers
185 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. ...
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2answers
160 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, ...
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2answers
339 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 ...
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1answer
723 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 ...
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1answer
131 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?
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2answers
7k views

What are some ways to find my haplogroup through my raw DNA data?

I just got my results from ancestryDNA. What are some ways to find my haplogroup through my raw DNA data?
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1answer
1k views

Ancestry DNA - 100% East Asian but how do I find out which group/population/part of East Asia my ancestors are from?

Can I use my raw DNA data to find out which specific part of East Asia my ancestors come from?
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1answer
692 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 ...
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1answer
2k 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 ...
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4answers
4k 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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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 ...