Questions tagged [autosomal-dna]

For questions about autosomal DNA testing for genealogical purposes. Autosomal DNA is the majority of the DNA in our chromosomes, and is passed by both mother and father to child. This includes tests provided by AncestryDNA, 23andMe, and FamilyTreeDNA's FamilyFinder.

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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
153 views

How can overlapping ~35 cM segments of matching kits not match each other?

How can overlapping 36.8937 cM (from 11,551,254 to 48,458,402) and 82.9541 cM (from 12,460,601 to 74,135,725) matches on Chromosome 18 not match each other? On GEDmatch, I compare Alice to Bob and ...
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137 views

Can Origin of Spanish DNA from 16th to 18th generations be traced to historical events?

DNA on Ancestry & GEDMatch -- I find a bit of Spanish with a dash of some Mediterranean groups all dated to 16 or so generations back. Else all British Isles with another dash of Northern ...
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1answer
5k views

Which Gedmatch admixture calculators are most useful for an individual of predominately African American descent?

According to my Ancestry DNA autosomal test results, my admixture is 70% Sub-Saharan African, 25% European and 4% Native American. Which Gedmatch admixture calculators might I find particularly useful ...
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3answers
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Finding out which DNA matches are from paternal side?

I've submitted my DNA to Ancestry and GEDmatch in a desperate attempt to match to anyone from my paternal side. I am unsure of who my father is and my mother will take that information to her grave. ...
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689 views

Understanding Native American DNA at gedmatch.com?

How come gedmatch.com shows my alleged Native American DNA, but ancestry.com, FTDNA.com and 23andme.com does not? Does anyone know why that is? What is the difference between gedmatch database and ...
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1answer
294 views

Why is GEDmatch report omitting some matches?

I ran a GEDmatch multi-kit analysis and got this report for Matches with Joseph's kit, for chromosome 12: And putting a different kit in first position, I get this report for matches with Charlotte: ...
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1answer
41k 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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2answers
469 views

Why is the total shared Centimorgans 52.7%?

Can you please tell me what I have done wrong in my calculation? I added all the Centimorgans from my Gedmatch chart and it gave a total of 3587 which is 52.7% It should have been 50% only. The ...
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1answer
2k views

What is expected shared cM of double third cousins?

I've come across double third cousins, who are third cousins through two different routes as the same two families had two separate marriages between them that leads to this situation. For DNA ...
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3answers
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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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Is a Chromosome 23 match less statistically significant for the same cM?

I've noticed that in comparing multiple autosomal kits, I often get a bunch of matches in chromosome 23 for various triangulation compares I've performed. It seems matches on chromosome 23 come up ...
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1answer
167 views

Interpreting DNA Results from 23andMe?

I received my results from 23andMe and I read and read and I just don't understand. I wondered if you could help me? My Mother is 91 years old and never knew who her birth father was. We took the ...
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1answer
804 views

Why are the lengths GEDmatch.com Chromosome Segment Matching segments not proportional to their cM?

The GEDmatch.com Chromosome Segment Matching report has the following legend: One of my reports has the following triangulation match: The purple segment (< 5 cm) is 102912701 - 111046063 (4.189 ...
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When will early 2016 23andMe kits be uploadable to GEDmatch.com?

I have a cousin that took a 23andme autosomal DNA test and they reported: I am having trouble uploading my raw data . My 23&me data was purchased more recently so it will not let me download. ...
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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 ...
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4answers
97k 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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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 ...
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3answers
823 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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2answers
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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 gedmatch....
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1answer
890 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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1answer
430 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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2answers
3k 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
588 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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1answer
358 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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1answer
2k 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
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 ...
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1answer
1k 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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0answers
346 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
2k 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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