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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52 views

Can 2,025 cM shared indicate full Siblings?

My brother and I did ancestry tests at different times. We had 2,025cM over 39 segments. Longest one was 158. As I looked at our matches all I could see was my moms side of the family. It was saying ...
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58 views

Can 1,782 cM shared indicate Half Siblings? [duplicate]

Could a person with 1,782 cM actually be my half-sibling? This person is listed as close family to me, yet I do not know them. My cM is the same as this person's. I do have 6 paternal half ...
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185 views

How can a 3rd Cousin be a DNA match to my mother AND my father’s side?

On Ancestry I have a match at the 3rd cousin level and we have common matches with both my mother and fathers side. New to this and that is confusing to me. Sorry if I am missing something obvious!
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72 views

Adopted 1st cousin match possible secret sibling?

An unknown woman matches: me with 1045cM my aunt (my father's sister #1) with 1952cM one of my 1st cousins (from my father's sister #2) with 998cM. My father has one other sibling: a brother who has ...
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158 views

Family Networks at Living DNA tells me to Keep Fishing?

Late last year (8 months ago) I accepted an offer via FindMyPast to upload my AncestryDNA results to Living DNA. Three months later I followed the instructions in an email from Living DNA to opt-into ...
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114 views

Stacking DNA and trees?

I would like to combine information from my trees at Ancestry and MyHeritage and my family members' DNA kits. Is there a software program I can download that will let me input everything? I need the ...
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1answer
125 views

Understanding second cousin match on AncestryDNA?

I am a little confused. I have a match on Ancestry.com...who by the way doesn't answer my emails which is incredibly disappointing as he is the closest match I have ever had and I've been on FTDNA for ...
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2answers
94 views

3rd cousin DNA match not matching either parent?

I am having trouble figuring this out. A 3rd cousin popped up with 117 cMs shared across 6 segments via Ancestry DNA. She is not a match with my Mom and there is not a common match with my dad's ...
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146 views

Understanding high match on autosomal and X dna?

I have an autosomal match of 1125 centimorgans with largest cm of 128 and a X dna match of 108 with largest cm of 67. 1 8 generations apart. The lady I match to was adopted and knows nothing of her ...
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1k views

Can half-siblings show different relationships to extended family?

My husband has found a half sibling, first on Ancestry showing a match of 1542 cm over 77 segments, and then confirmed on 23andme with a suggested relationship of "half sibling". Ancestry only showed "...
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116 views

Needing further testing to determine half-sib status?

Another AncestryDNA user and I share 1,792 centimorgans across 49 DNA segments. The back story is that I'm a sperm donor baby and this user's father was a donor at the same clinic in the same time ...
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228 views

DNA tag disappears after tracing many generations back?

When I trace an ancestor back, back and back, suddenly, my DNA link disappears, it's as if one of many greats grandparent misbehaved. I don't think Roger William was misbehaving, but my DNA disappears ...
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What is the cut off for a half-sibling and first cousin in CM's?

I am adopted and was searching for my birth family and found a cousin and since then I had someone in the family helping me with the search. I found someone who I think is my half-sibling. She did a ...
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58 views

Analysing relationships using autosomal DNA

I (A) am 1095 cm's from a known cousin (M). I (A) am 1224 cm's from an unknown person (S) My cousin (M) is 1458 cm's from the unknown person (S). I (A) am described as a Cousin to (S) (M) is ...
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112 views

Understanding 1,102 shared centimorgans?

I took an AncestryDNA test and have matched with a new relative JP. She and I share 1836cM. She’s not my half sister. She’s not my grandparent. She could be my father’s half sister. With this amount ...
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225 views

Identical twins DNA numbers (centiMorgans/cMs)

Are identical twins DNA numbers (centiMorgans/cMs) less from grandparents because they are identical twins?
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73 views

Does match sharing 952 cM indicate grandparent or great uncle?

My mother was adopted and we are trying to find the parents. I have a DNA match that is 952cM and 38 DNA segments. What is the chance of this being my grandparent? It says 1st cousin and we know ...
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75 views

Does sharing 1,249cM indicate half sibling?

My husband was raised by his older half brother. We have been told throughout the years that he is actually my husband father.We ran an ancestry test with his daughter. Results were sharing 1249cm ...
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716 views

How many Centimorgans would be shared with half niece?

My newly discovered half sister has a child. Around how many centimorgans do you think i should share with her? I am not looking for an exact number. I'm looking for a range.
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118 views

Is AncestryDNA match of 1,655 cM a half sibling?

Shared DNA: 1,655 cM across 46 segments. Can someone that shows this as one of my matches on AncestryDNA be a half sibling?
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58 views

Match to a man and his daughter, but not his grandson

My father and I have a DNA match to a cousin but my son does not. How is this possible?
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97 views

What is family connection for 1722 cM match?

I have a DNA match with a man that AncestryDNA discovered. The match is DNA 1722 cM across 62 DNA segments. I have messaged the guy to try and talk with him and discover how we are related. He seems ...
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127 views

Half brother and sister related to other family?

After taking an AncestryDNA test, I matched a half brother, who I'll refer to as Y to preserve privacy, and sister, who I'll refer to as X. Both appear to come from the maternal side (both adopted ...
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1answer
132 views

Helping my son find his unknown biological father

My son's biological father and his family is unknown. Both my son and I took Ancestry DNA tests. Then I went through his matches for "shared matches" - if I didn't show up, I assumed the match was ...
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32 views

Trying to narrow down biological grandfather

I have been working on finding my biological grandfather. The closest DNA match I have to my father (who has taken a test) is 1015cM. I've narrowed down his father to either her father or her uncle. ...
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55 views

Can niece not connect to my paternal line but her daughter connects to my maternal and paternal side?

My niece is a dna match 2112 cM over 80 segments. She only matches on my maternal side of the family. Her daughter is a dna match of 1118 cM over 46 segments. She matches both my maternal and paternal ...
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52 views

My close family dna match

On ancestry.com my first to second cousin match is my supposed first cousin but him and I share 841 CM across 46 segments is he my cousin or my half nephew and do I possibly have a half sibling?
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1answer
137 views

Understanding 1,537cM match to person and 1,950cM match to their uncle

I have a match with a female that is a few years younger than me (she is in the 60s). She and I match at 1,537 cM across 47 segments. Her Uncle (Paternal Uncle, as far as I know) is a match with me ...
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21 views

Does 1,517 shared cM indicate half-siblings? [duplicate]

My husband has a close family match of 1,517cM across 61 segments and his niece shares 906 cM across 40 segments. Is there a chance this is a half brother to my husband and half uncle to his niece? ...
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31 views

Does 1,957 centimorgans indicate half-siblings? [duplicate]

I have recently had a DNA test and have a shared match of 1957 over 50 segments with one of the matches. They are not interested at the moment in communicating. I was brought up as an only child, so ...
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38 views

Combining sibling DNA data for easier research

I have DNA from four of my siblings (they were tested at three different places). I'd like to find a way of easily combining our raw DNA data into two files -- even if the files weren't sorted by our ...
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2answers
119 views

Are AncestryDNA matches of 904 to 1,211 cM likely to indicate half siblings?

Grandma is showing dna matches with four “1st cousins” who are all supposedly first cousins themselves. The matches are 1211, 1175, 1138, and 904 cms. There is also a match of 972 who is a brother to ...
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89 views

Unlinking Tree & DNA on Ancestry

I have my Ancestry DNA results linked to my Tree. If I choose to unlink, link to a different person or different tree will I lose any of my notes, groups etc? I assume not, but thought it best to ...
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47 views

Question on 1/2 sibling versus 1st cousin

A lady showed up in my DNA I think they are the same person. The first one showed up as 1,942 centimorgans shared across 72 DNA segments. The 2nd one says 936 centimorgans shared across 36 DNA ...
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1k views

Ancestry Ethnicity says I'm 100% Irish and Scottish?

Can you explain how I can be 100% Ireland and Scotland in my Ethnicity estimate on Ancestry? Why not 99% Ireland and 1% Scotland, how can it be 100% both?

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