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Banging my head on the wall, I know it can't be that hard!

Banging my head on the wall, I know it can't be that hard!

Posted: 24 Jul 2015 11:09PM GMT
Classification: Query
I have a DNA match with a lady (3rd-4th cousin) There is no overlap in our tree, however her grandmother was adopted. She took her uncle's DNA and he and I showed 2nd-3rd cousin. They both match my daughter and grandson, but not my mother.

The time and location of her grandmother's birth only matches my father's paternal grandmother.

Well my new cousin sent this message to me today:
"Gedmatch, besides being close DNA matches, you and I match each other on the "X" chromosome. Since we're both female, we each got one X chromosome from our father and one from our mother. We already know I must match you on my mother's side - her mother, my maternal grandmother - and we think the connection is to your father's father..."

So if what I'm understanding is she would have to be related to me by my fathers maternal side.
That could be interesting, only they were Finnish and she and her uncle show zero Finnish.

Can someone help me figure this out. I feel like a dog chasing its tail! ;-)

Re: Banging my head on the wall, I know it can't be that hard!

Posted: 25 Jul 2015 12:23AM GMT
Classification: Query
You have one X from your paternal grandmother and one X from your mother,

Re: Banging my head on the wall, I know it can't be that hard!

Posted: 26 Jul 2015 4:22PM GMT
Classification: Query
Ignore ethnicity when figuring relationships. Any particular ethnicity can be lost in random recombinations of the generations, sometimes in just a very few generations.

Re: Banging my head on the wall, I know it can't be that hard!

Posted: 27 Jul 2015 1:47PM GMT
Classification: Query
Also something to keep in mind. If some one is a second cousin then you connect 3 generations back and that does not count you as a generation.

Re: Banging my head on the wall, I know it can't be that hard!

Posted: 28 Jul 2015 5:09AM GMT
Classification: Query
Oh you folks are wonderful!!! It's going to take me a while to learn about all of this! Let's just say it's been 40+ years since I sat in a science class, and the only thing remember was pretty much XX, XY and dominate/ recessive. ;-)

If we have it figured correctly my great grand mother, baby and put it up for adoption.
My new cousin's uncle (who showed as a match me), was the adopted baby's son.
My new cousin was her grand daughter.

Generation 1 - My father's paternal grandmother
Generation 2 - The adopted baby
Generation 3 - cousin's mother and uncle
Generation 4 - new cousin

So that would make the uncle my first cousin once removed and her my second cousin?
_________________________________________
I went back to GedMatch and ran our kits again.
Under the heading "X-DNA" She shows 'Total cM' of 7 and 'longest cM' of 7

However when I clicked on the 'Details' link (X-DNA Comparison Entry Form) to compare it said, Minimum threshold size to be included in total = 700 SNPs
Mismatch-bunching Limit = 350 SNPs
Minimum segment cM to be included in total = 7.0 cM

Largest segment = 0.0 cM
Total of segments > 7 cM = 0.0 cM
No shared X-DNA segments found

While I have no clue about what the 7s are about, I would assume this is what she saw that gave her the idea we shared a X.

So if all of this makes sense, then mystery solved.. my great grand mother had a little secret, and we found it. ;-)
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