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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2 votes
1 answer
41 views

Is there a way to declutter Endogamy in DNA comparisons?

I've recently taken an Acestry DNA test to try and confirm my paternal line's great grandfather. After getting the results, I thought I identified the correct one. One of the nearest matched ...
2 votes
2 answers
83 views

How do you vet DNA cousin "matches" that reach out to you?

I did the DNA test thing back in January. One of the things I was hoping to get out of it was to make contact with other (distant) cousins. What I didn't think about was putting myself out there for ...
5 votes
2 answers
1k views

How am I really related to a person with 1246 cMs and no shared X-DNA?

I have a cousin who is coming up as having 1246.5 centimorgans in common the largest being 103.2 and 1.8 generations. We have no shared X DNA found. I am a female and he is a male. We are supposed to ...
0 votes
1 answer
109 views

Half sister has half sister or cousin

My half sister (Maternal) share 1673cM across 50 segments. Cousin #1 to me shares 994cM across 40 segments. Cousin #1 shares 1056cM across 46 segments. Her maybe father is my mothers brother. All of ...
-2 votes
1 answer
283 views

Private DNA Test Results for Half Sibling

I have 2 alleged fathers and have recently ruled out one of them with a private DNA test. I am now trying to determine whether the other is my father but he is deceased, so I am testing with one of ...
1 vote
1 answer
120 views

Using DNA to identify deceased grandfather

After discovering my grandfather wasn't related (my DNA showed zero relative matches on all sites for this man) I had my 3 brothers, a sister, my niece, and 2 of my children (who are half-siblings) ...
0 votes
1 answer
45 views

Adopted first cousin - is her parent my aunt or my uncle?

I have a first cousin who was adopted at birth. My mom had two brothers and a sister. The adoption records are sealed and cannot be viewed due to Florida state law (1969). Is it possible to determine ...
0 votes
0 answers
47 views

Confirming my real (genetic) grandfather from 23andMe results

I recently found a photo of my maternal grandparent’s wedding party. I’ll refer to my maternal grandparents as GM (grandmother) and GF (grandfather). I was surprised to see that one of the people in ...
0 votes
0 answers
41 views

Identifying maternal grandfather using DNA

I have recently started the process of grouping my DNA matches on my mother’s side. It's starting to look like the man I thought was my grandfather may not be. I don't have my mother’s DNA but I have ...
2 votes
1 answer
1k views

Explaining DNA mystery of unexpected 1st cousin?

I wanted someone to confirm my thoughts or give me some guidance. I have uncovered a possible 1st cousin mystery dna match. (ancestry)( I know all my first cousins and no one has done a dna test.) ...
0 votes
1 answer
94 views

Unknown grandfather

Is it possible to know if my grandfather is the same person as my cousins grandfather thru DNA? My grandmother and my cousin's grandmother are sisters. All of these grandparents are dead.
1 vote
1 answer
321 views

Distinguishing half siblings from first cousins (possible fathers are brothers) using shared cM

Regarding half siblings, sent my DNA to Ancestry came to a match of half sibling at 1530 cMs @ 99% half sibling however was in contact with such match and he is claiming my father or one his two ...
2 votes
4 answers
482 views

Understanding daughter's 314 centimorgans with half nephew

My daughter just learned she shared 314 centimorgans with a boy we believed was her half brothers son. I have just sent in my sample as the supposed father of her 50 year old half brother. We are all ...
1 vote
2 answers
505 views

Identifying paternal grandfather using DNA tests if birth name is unknown

My paternal grandfather was raised by others and took their name, but he was not officially adopted. I have no idea of his real name. Can I still find him/family with DNA test(s) and, if so, which ...
-1 votes
1 answer
53 views

How can I share more DNA with a distant cousin's son than with the distant cousin?

My Heritage has brought up a 0.6% match with a suggested son of a 3rd Cousin / 4th Cousin. He is aged under 20. Their tree is managed by the father aged in his 40's. However, there is only a 0.2% ...
0 votes
1 answer
110 views

Conflicting information about my husband's maternal grandmother's ancestry/DNA

We have had a ton of research done on my husband's maternal grandmother, Emma Louise Radunz Frank. She was born in Menominee, Michigan on May 24, 1894. The research done all shows that she was ...
0 votes
2 answers
580 views

Is it common for northeast Germans to have Scandinavian ancestry?

From Ancestry.com DNA testing, I have 11% Swedish/Danish ethnicity, but no Scandinavians in my tree. My tree is pretty good back 5 generations. My German ancestors immigrated to the USA about 1850. ...
0 votes
0 answers
18 views

First Generation/Sibling Match? (using one to one DNA comparison)

Trying to wrap my head around this to determine if this is a legitimate sibling match (?)using report I got on GedMatch (one to one comparison DNA). Report shows: 3557.3 total Autosomal cm/largest 206....
7 votes
6 answers
14k views

Can Ancestry.com DNA matches be wrong

I (female) had an unexpected half sister match (1,866 cM across 49 segments) in Ancestry.com. We are about the same age so I'm assuming sibling. Upon closer examination I realized my brother(A) was ...
2 votes
2 answers
89 views

Investigating NPE in mid-1700s Virginia

After taking Y-37 DNA test at FamilyTreeDNA, I discovered that I matched 37 of 37 markers to descendants of William Adkins, b. 1689 VA. I have a paper trail back to George Webb, b. 1794, VA. I'm ...
4 votes
1 answer
327 views

Identifying John Morgan, son of Thomas D. Morgan (1809-1870)?

I have a real dilemma. I have found a DNA link to the Thomas Morgan (1791-1860) family through Frances Denira "Fanny" Morgan (1821-1899), daughter of Benjamin Francis Morgan (1762-1835), who was the ...
2 votes
1 answer
175 views

Are Y-DNA matches less accurate in a common haplogroup?

My maternal cousin recently took a Y-DNA test to help with research on my mother's family line. The results are back and he is in haplogroup R-M269. He has 347 matches at 37 markers. I took a test ...
2 votes
1 answer
102 views

DNA origins on Ancestry

About 6 months ago I had my DNA tested through Ancestry and am currently building my family tree. In my DNA origins it is showing, on my paternal side, that my ancestors 100% originated in East Mayo ...
2 votes
2 answers
504 views

Using DNA to verify story of sailor from Spanish Armada being ancestor?

There has been a story in the familly that one of the sailors from the Armada was an ancestor, so for my Mothers Birthday I brought her a DNA testing kit. The results showed that she was 5% Spanish(...
2 votes
3 answers
379 views

Understanding shared DNA of 1,576 cM with great nephew

I had my DNA tested through Ancestry. About a year ago, my great nephew (I'll call him GN-1) whom I raised had his tested. The match came up Close Family–1st Cousin Shared DNA: 1,576 cM across 69 ...
1 vote
1 answer
127 views

Overwhelming AncestryDNA match pointing to an "impossible" link?

Here's the situation: I have strong documentation going back to a Fanny Bergey, born 11 April 1794. (Maybe 13 April.) And, I have 41 DNA matches through that ancestor but no direct evidence of which ...
2 votes
2 answers
7k views

Is this a half niece/uncle relationship vs 1st cousin once removed, or something else?

I've been in search of my deceased father's biological family. He was placed for a closed adoption 60+ years ago. I've discovered the two families who parented him thanks to Ancestry DNA matches. ...
1 vote
1 answer
331 views

Does 439 cM shared suggest half uncle rather than half first cousin?

I am trying to determine if my half sister had a different father than the one she grew up with. I was given a name of who the father could be. He has passed away but his son took a DNA test on ...
1 vote
1 answer
94 views

DNA result suggests my nephew is my great-nephew

I had my DNA tested several years ago and was pleased with the results. Recently I saw where my sister's son (my nephew) had apparently had his DNA tested by the same company. While his DNA was ...
4 votes
2 answers
259 views

Triangulation in DNA, weird match!

I thought I had grasped the meaning of triangulation. Until I saw this match in MyHeritage (see below). What is happening? It looks like the two segments that have the triangulated match are single ...
8 votes
1 answer
382 views

Explaining major discrepancy in genomic position between Gedmatch and MyHeritage?

I have identified a discrepancy with several test kits that were tested at Ancestry, with results transferred to both Gedmatch and MyHeritage, all relating to the same area at the end of chromosome 19....
1 vote
1 answer
58 views

Stumped with a DNA connection

I have many DNA connections on Ancestry, I come from the Mormon genealogy on my maternal side, one great great uncle had 2 wives and 27 children! (Taylor line) Of all my connections on Ancestry I'm ...
1 vote
1 answer
41 views

Sharing DNA record between two ancestry accounts

My DNA record is in my Australian account and I have activated a UK ancestry account, how do I get the UK account to recognise the DNA record in my Australian account. The reason I did this is because ...
11 votes
6 answers
13k views

How to get an elderly person to provide saliva sample for DNA?

I have an Ancestry autosomal DNA kit that we are trying to get a 95 year old woman to take and having trouble. I provided the hints that 23andme offers to my cousin that is trying to administer the ...
11 votes
5 answers
380 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 ...
6 votes
2 answers
5k views

How do I convert my RAW FamilyTreeDNA FamilyFinder test result files to Ancestry or 23andMe format?

How do I convert the the RAW FamilyTreeDNA.com Family Finder Autosomal and X DNA result files into another sites format like Ancestry.com's or 23andMe's format? There is a growing need to do this as ...
1 vote
1 answer
144 views

Understanding cM and DNA

I'm a female and I have had a DNA test through Ancestry, and so has my niece (my brother's child). I have serious questions as I don't really understand how DNA is divided other than decreasing or ...
4 votes
1 answer
180 views

When the same name or family comes up in ancestors of DNA matches

I am pouring through the family trees of my DNA matches on both GEDMatch.com and Ancestry.com and, while it hasn't helped me solve any road blocks yet in the 2 years since I tested myself, I have ...
1 vote
1 answer
80 views

Understanding ancestry composition results from 23 and Me

I recently did 23 and Me. I was primarily curious about my father's side. He passed away when I was young and his side of the family didn't keep great records in terms of where their ancestors came ...
1 vote
0 answers
227 views

Can paternal half sisters share only 16% dna?

My mom was adopted and knew nothing about her biological dad. We know her biological mother and her family. I'm looking for her bio dad. We both tested on Ancestry. I tested first, and I did the ...
0 votes
0 answers
51 views

Nearly identical ethnicity inheritance?

I did the testing through Ancestry, and according to the Ethnicity Inheritance graph (the donut), my parents have nearly identical proportions of Scottish (30% 27%), Irish (10% and 9%), and England/...
3 votes
1 answer
127 views

Creating a phased DNA kit using grandparents' kits?

I was lucky in that I was able to DNA test both paternal grandparents, as well as my maternal grandmother before she died last year. I have also tested my mother, but unfortunately my other ...
2 votes
2 answers
250 views

Shared DNA when MRCAs are Cousins

On average, 2nd cousins are expected to share about 1/16 of their DNA. If parent-child share 3600 cM, then the 2nd cousins would share on average 1/16 of that or 225 cM. The 2nd cousins share a set of ...
7 votes
2 answers
505 views

Partial matches on Triangulated DNA segments

With DNA information from FamilyTreeDNA, I have determined trangulation groups. I have chromosome segments of significant size (> 10 cM) over which A (myself) matches B (my known cousin) and A (myself)...
9 votes
3 answers
323 views

Using shared cM to determine likelihood of misattributed paternity?

My ancestor Harriet Smith was born in the mid-1850s in England. Her birth certificate shows both of her parents (John Smith and Sarah Johnson). For the purposes of the birth registration, John and ...
5 votes
2 answers
1k views

Adopted and making sense of my DNA matches: which are paternal vs maternal?

I am adopted. I know who my birth mother was and that she came from France. I was conceived in a Brothel in a small town that ironically, my adoptive parents lived only miles from, and that I raised ...
1 vote
4 answers
2k views

Half Sibling DNA not matching?

My half-sister and I recently completed DNA tests with myHeritage.com. The results don't show us having matching DNA. We share the same father. Is it possible that we are half siblings even though ...
1 vote
2 answers
17k views

Do we have more female than male ancestors?

I have read a claim in several sources, including a New York Times article by John Tierney, that we have more female ancestors than male ancestors. "Citing recent DNA research, Dr. Baumeister ...
3 votes
5 answers
119k views

How long do results typically take for AncestryDNA 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 ...
0 votes
1 answer
78 views

Distinguishing niece from sister using shared percentage DNA [duplicate]

On Ancestry who I thought was my niece my oldest sisters child shared 49% -56% dna how is that possible ? I also have a first cousin who shares 26% yet his sister only shares 6% why is that

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