Questions tagged [x-dna]

For questions about X-DNA testing for genealogical purposes. X-DNA is passed from fathers to daughters, and from mothers to both sons and daughters. Results for X-DNA testing are typically included in autosomal DNA tests.

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Should full first cousins (same gender) always share same xDNA matches?

I'm confused. Maybe I misunderstand how xDNA works. I have a first cousin that doesn't share the same xDNA matches as me (we only have each other as common matches). Our atDNA appears to match on both our mother's parents sides of the family. (We…
TJinBC
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Do X-DNA matches indicate we are related from the mother (maternal side)?

I had my DNA done and a person popped up that I never heard of ..The total Autosomal 116.4, the largest cM is 50.3 But where I am stuck is on the X-DNA with the cM being 15.1. Does the X-DNA match indicate we are related from the mother (maternal…
Fay Wright
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Why are PAR1 and PAR2 on X-chromosome not matching the mother for a son?

In a gene test for a son and a mother by FamilyTreeDNA, the son is shown as having a match with the mother on the X chromosome from about 2 700 000 to about 154 900 000, indicating that parts of the PAR1 and PAR2 are not matching. What is the reason…
a20
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Male with X-chromosome matches from father's side?

I am a male and in my FTDNA DNA-matches, when I filter for matches by X-chromosome match, I get around 30 people who can only be possible relatives from my father side (my parents came from distant European countries, the matches are from the region…
user9107
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Understanding Second Cousins using X DNA match?

I have no clue how we are 2nd cousins. I do not know a lot about my fathers parents side. What is the X DNA and on what side of my fathers is it? On what side would it be for the other person? I know she isn’t related on my mom’s side.
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Understanding xDNA match when no atDNA?

What does it mean when I have no shared atDNA but a small amount of xDNA with a male match? It's a minute amount of X at 14 but this fellow would like to try & track where we intersect. I'm just getting my head around the atDNA & have no clue…
indash
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DNA second cousin who is parent?

I have found a second cousin and have narrowed her down to being the granddaughter of my paternal Grandmother's only sibling (a sister). My new second cousin is adopted and excited to finally know about her birth family. I was wondering without…