Do I Have a Success Story?

[trisports]

I had my parents complete the autosomal test from Ancestry in September. Without too much success with their matches, I finally realized I could upload their raw data to the FTDNA database.

When I checked my mother's results, I was shocked to see that the first match listed based on relationship was a half sibling, aunt/uncle, niece/nephew, grandparent/grandchild.

Looking at the results in the chromosome browser, the chromosomes light up like a Christmas tree!

Data that I am assuming that seem important are: 44 shared segments, 1535.75 shared cM, longest block 157 cM. The X chromosome has three blocks of 70.19, 8.35, and 96.71 cM respectively. This is an X-match. The person who had taken the FMS test is a female.

The results would be significant to us, as my mother was abandoned as a toddler by her single parent mother. We have her birth certificate listing her mother's name and her mother's place of birth. I have been able to track her maternal line back to her great-great grandparents, and do have a DNA match on ancestry with someone who has the same relatives in their tree.

Mom's birth certificate is blank where it should list her father.

How likely is this person my mother's half sister through her father?

[prairielad]

Things to consider
Find out if this match tested with FTDNA or is a 23and me transfer (pre V4 testing chip)
3rd party transfers to FTDNA only include the FTDNA tested SNPs.
If FTDNA tested SNPs are not tested by 3rd party they are entered as no calls in your FTDNA raw data (--).
Non tested FTDNA SNPs present in 3rd party Raw data are omitted from FTDNA Raw Data.
This (no calls) may cause breaks in the amount of DNA shared where one should not be if there is a higher amount of no call present in segment then is allowed by FTDNA matching algorithm.

With that in mind..

sisters that share the same father would share the entire X chromosome with 196cM.

Fathers pass on, to their daughter, their entire single X chromosome.

This match could be, if their maternal ancestry does not match what you know, a paternal Aunt in which the X matching would be from possible paternal Aunts and possible fathers maternal side.

My Sister to my paternal Aunt
Sister 1 shares 1403.82cM and six segments on X totaling146.74cM
Sister 2 shares 1509.05cM and six segments on X totaling147.49cM
Sister 3 shares 1289.43cM and six segments on X totaling146.74

My Sister to my Paternal Uncle 1
Sister 1 shares 1433.85cM and one segment on X of 51.58cM
Sister 2 shares 1585.85cM and one segment on X of 51.58cM
Sister 3 shares 1568.77cM and one segment on X of 51.58cM

My Sister to my Paternal Uncle 2
Sister 1 shares 1693.19cM and three segments on X totaling 63cM
Sister 2 shares 1838.35cM and three segments on X totaling 63cM
Sister 3 shares 1594.36cM and three segments on X totaling 63cM

[trisports]

Thank you for taking the time to respond.

The person who took the test, I assume, took it through FTDNA, as no * comes up beside her name indicating it is a third party upload.

The total cM on the X chromosome is 175.25. As my mother's raw data is the upload from Ancestry, can I also assume that there may not be an exact 196 cM match?

I have contacted this woman. She is 5 years younger than my mother. There is no match in their maternal ancestry.

[prairielad]

..........

The person who took the test, I assume, took it through FTDNA, as no * comes up beside her name indicating it is a third party upload.

.........

.

I don't believe this is working presently. the * indicating a 3rd party transfer match.
I have 4 transfer kits at FTDNA and none of them show the * beside their name in the chromosome browser of my FTDNA tested kits.

[prairielad]

.....

I have contacted this woman. She is 5 years younger than my mother. There is no match in their maternal ancestry.

Your mother maybe the aunt and the match the niece.

That would mean, if it is through your mothers fathers side, your mothers father could be a sibling of either of this persons parents.

See if any of this matches Aunts and Uncles (maternal and paternal) fit the age of possibly being your mother parent)

My mother has nieces and nephews that are a few years older then her.

[prairielad]

...

The total cM on the X chromosome is 175.25. As my mother's raw data is the upload from Ancestry, can I also assume that there may not be an exact 196 cM match?

...

I have never compared an ancestry file to FTDNA, so I don't know how much difference there is. I assume SNP wise they should be identical as from what I understand they both use the same chip to test, although FTDNA removes SNPs they test from Raw Data file that are deemed medical, not sure if ancestry does.

You can check if it is a no call issue, by opening your mothers Build 36 X Raw Data file.
The sections that span the non matching segments you have with this match, are there a bunch of no-calls (--) entered in close proximity to one another? The odd no call does not affect matching, it is when there is a bunch close together.

[prairielad]

Your mother maybe the aunt and the match the niece.

That would mean, if it is through your mothers fathers side, your mothers father could be a sibling of either of this persons parents.

See if any of this matches Aunts and Uncles (maternal and paternal) fit the age of possibly being your mother parent)

My mother has nieces and nephews that are a few years older then her.

Sorry wasn't thinking correctly when I posted this, for amount of DNA shared scenario is incorrect, beside the fact that above would make your mother the cousin of her match, not aunt

[prairielad]

Your mothers father, could be one of matches Grandfathers although I think DNA share maybe to big for this scenario..

[Sarmat]

I don't believe this is working presently. the * indicating a 3rd party transfer match.
I have 4 transfer kits at FTDNA and none of them show the * beside their name in the chromosome browser of my FTDNA tested kits.

I thought it was just the letter "B" the beginning of the kit number that indicates a transfer.

[prairielad]

I thought it was just the letter "B" the beginning of the kit number that indicates a transfer.

For kit numbers yes, but on your list of matches in the chromosome browser, third party transfers apparently are suppose to have a * by their name as one does not see matches kit numbers at FTDNA.

[trisports]

With that in mind..

sisters that share the same father would share the entire X chromosome with 196cM.

Fathers pass on, to their daughter, their entire single X chromosome.

On GEDmatch, X-DNA has total cM of 196

[prairielad]

On GEDmatch, X-DNA has total cM of 196

At Gedmatch, what does their kit number begin with? A, M or F?
What is listed in the Type column beside this match?

Did you load your original Ancestry Raw Data or your FTDNA Raw Data to Gedmatch?

[trisports]

At Gedmatch, what does their kit number begin with? A, M or F?
What is listed in the Type column beside this match?

Did you load your original Ancestry Raw Data or your FTDNA Raw Data to Gedmatch?

My kit begins with an "A", theirs begins with an "F". Both have F2 as type. I loaded original Ancestry Raw Data, first to FTDNA, then to GEDmatch.