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Gentica277282
03-22-2022, 04:38 PM
My brother seems to be taking 47 percent from my aunty on my mothers side but when I try the same model I’m getting 0 percent with her, all on the same chip from ancestry dna


Target: brother_scaled
Distance: 1.4946% / 0.01494595
47.0 AncestryDNA-2_scaled
35.2 Berber_Morocco_Central_Atlas_Tamazight
5.2 Berber_Tunisia_East_Zenati_Sened
3.6 Berber_Algeria_Shawiya
3.2 Spanish_Asturias
3.2 Yemenite_Mahra
2.4 Yoruba
0.2 Palestinian_Christian

Me on the same model
Target: me
Distance: 1.3697% / 0.01369701
21.6 Yemenite_Mahra
17.2 Berber_Morocco_Shilha_Tiznit
15.6 Berber_Tunisia_East_Zenati_Tamezret
12.6 Berber_Algeria_Shawiya
12.6 Berber_Morocco_Ghomara
10.0 Yoruba
5.0 Palestinian_Christian
2.8 Berber_Morocco_Central_Atlas_Tamazight_Errachidia
2.6 Spanish_Soria

Brother without aunty
Target: brother_scaled
Distance: 1.7649% / 0.01764930
47.2 Berber_Morocco_Central_Atlas_Tamazight
20.0 Berber_Morocco_Central_Atlas_Tamazight_Errachidia
17.2 Yemenite_Mahra
8.4 Yoruba
6.8 Spanish_Asturias
0.4 Palestinian_Christian

Is this due to dna recombination

Gentica277282
03-22-2022, 06:20 PM
All of our results, adding Papuan seems to change my results and brings my distance down quiet a bit

Target: me
Distance: 1.2346% / 0.01234559
28.6 Berber_Morocco_Shilha_Tiznit
20.4 Yemenite_Mahra
12.8 Berber_Algeria_Shawiya
10.0 Yoruba
9.8 Berber_Morocco_Ghomara
9.0 Palestinian_Christian
2.8 Spanish_Soria
2.2 Berber_Morocco_Central_Atlas_Tamazight_Errachidia
2.0 Berber_Tunisia_East_Zenati_Tamezret
1.6 Berber_Morocco_Senhaja_de_Srair
0.8 Papuan

Target: AncestryDNA-2_scaled
Distance: 1.8222% / 0.01822212
25.4 Berber_Morocco_Central_Atlas_Tamazight_Errachidia
24.2 Yemenite_Mahra
20.0 Berber_Tunisia_East_Zenati_Zraoua
13.2 Yoruba
12.2 Berber_Morocco_Central_Atlas_Tamazight
5.0 Spanish_Asturias

Target: brother_scaled
Distance: 1.7738% / 0.01773789
35.0 Berber_Morocco_Central_Atlas_Tamazight_Errachidia
32.8 Berber_Morocco_Central_Atlas_Tamazight
16.4 Yemenite_Mahra
7.6 Yoruba
7.2 Spanish_Asturias
1.0 Palestinian_Christian

heksindhi
03-23-2022, 02:22 PM
All of our results, adding Papuan seems to change my results and brings my distance down quiet a bit

Target: me
Distance: 1.2346% / 0.01234559
28.6 Berber_Morocco_Shilha_Tiznit
20.4 Yemenite_Mahra
12.8 Berber_Algeria_Shawiya
10.0 Yoruba
9.8 Berber_Morocco_Ghomara
9.0 Palestinian_Christian
...


Could you run yourself, along with your brother and aunt using no more than 6 appropriately selected averages? Preferably the same 6 sources for all 3 of you. It would be interesting to see the results. The differences between you and your brother illustrate why it's always best to build a family/group composite for modeling purposes rather than using any one individual's coordinates. It's too easy to get stuck in the rabbit hole of chasing down minor exotic ancestry.

Gentica277282
03-26-2022, 01:33 AM
Could you run yourself, along with your brother and aunt using no more than 6 appropriately selected averages? Preferably the same 6 sources for all 3 of you. It would be interesting to see the results. The differences between you and your brother illustrate why it's always best to build a family/group composite for modeling purposes rather than using any one individual's coordinates. It's too easy to get stuck in the rabbit hole of chasing down minor exotic ancestry.

Target: me
Distance: 1.5215% / 0.01521516
40.4 Berber_MAR_TIZ
18.6 Yemenite_Mahra
14.6 Palestinian
13.8 Berber_Tunisia_Chen
7.4 Yoruba
5.2 Spanish_Asturias

Target: brother_scaled
Distance: 1.8347% / 0.01834711
60.4 Berber_MAR_ERR
16.6 Yemenite_Mahra
9.2 Spanish_Asturias
8.0 Berber_Tunisia_Chen
5.8 Yoruba

Target: Aunty (mothers side)
Distance: 1.8698% / 0.01869820
49.4 Berber_MAR_ERR
26.8 Yemenite_Mahra
11.6 Yoruba
7.4 Spanish_Asturias
4.8 Berber_Tunisia_Chen

Once again brother scoring aunty

Target: brother_scaled
Distance: 1.5454% / 0.01545387
47.2 AncestryDNA-2_scaled
32.0 Berber_MAR_ERR
10.8 Berber_Tunisia_Chen
5.4 Spanish_Asturias
3.8 Yemenite_Mahra
0.8 Yoruba

I don’t score her on the same model

My cousin aunties daughter

Target: Cousin (mothers side)
Distance: 1.6453% / 0.01645333
48.4 AncestryDNA-2_scaled
27.4 Berber_MAR_ERR
10.6 Berber_Tunisia_Chen
6.6 Berber_MAR_TIZ
5.2 Spanish_Asturias
1.8 Yemenite_Mahra


Cousin mothers side without her mother

Target: Cousin mothers side
Distance: 2.0260% / 0.02026024
73.6 Berber_MAR_ERR
14.2 Yemenite_Mahra
8.4 Spanish_Asturias
3.8 Yoruba

Abceff
03-26-2022, 06:31 AM
Target: me
Distance: 1.5215% / 0.01521516
40.4 Berber_MAR_TIZ
18.6 Yemenite_Mahra
14.6 Palestinian
13.8 Berber_Tunisia_Chen
7.4 Yoruba
5.2 Spanish_Asturias

Target: brother_scaled
Distance: 1.8347% / 0.01834711
60.4 Berber_MAR_ERR
16.6 Yemenite_Mahra
9.2 Spanish_Asturias
8.0 Berber_Tunisia_Chen
5.8 Yoruba

Target: Aunty (mothers side)
Distance: 1.8698% / 0.01869820
49.4 Berber_MAR_ERR
26.8 Yemenite_Mahra
11.6 Yoruba
7.4 Spanish_Asturias
4.8 Berber_Tunisia_Chen

Once again brother scoring aunty

Target: brother_scaled
Distance: 1.5454% / 0.01545387
47.2 AncestryDNA-2_scaled
32.0 Berber_MAR_ERR
10.8 Berber_Tunisia_Chen
5.4 Spanish_Asturias
3.8 Yemenite_Mahra
0.8 Yoruba

I don’t score her on the same model

My cousin aunties daughter

Target: Cousin (mothers side)
Distance: 1.6453% / 0.01645333
48.4 AncestryDNA-2_scaled
27.4 Berber_MAR_ERR
10.6 Berber_Tunisia_Chen
6.6 Berber_MAR_TIZ
5.2 Spanish_Asturias
1.8 Yemenite_Mahra


Cousin mothers side without her mother

Target: Cousin mothers side
Distance: 2.0260% / 0.02026024
73.6 Berber_MAR_ERR
14.2 Yemenite_Mahra
8.4 Spanish_Asturias
3.8 Yoruba

Try using one berber population only and use your aunt as the only arabian population, maybe that would work

Gentica277282
03-26-2022, 10:19 AM
Try using one berber population only and use your aunt as the only arabian population, maybe that would work

Target: brother_scaled
Distance: 1.5465% / 0.01546500
53.6 AncestryDNA-2_scaled
28.0 Berber_MAR_ERR
11.8 Berber_Tunisia_Chen
4.2 Spanish_Asturias
2.4 Palestinian

Target: me
Distance: 1.9083% / 0.01908264
46.2 Berber_MAR_TIZ
31.6 Palestinian
19.4 AncestryDNA-2_scaled
2.8 Yoruba

Without Palestinian

Target: me
Distance: 2.7332% / 0.02733195
65.0 AncestryDNA-2_scaled
33.8 Berber_Tunisia_Chen
1.2 Spanish_Asturias

Target: brother_scaled
Distance: 1.5568% / 0.01556842
58.4 AncestryDNA-2_scaled
20.2 Berber_MAR_ERR
17.2 Berber_Tunisia_Chen
4.2 Spanish_Asturias

I don’t understand because she should represent at least 47-50 percent of my dna

Abceff
03-29-2022, 04:59 PM
Target: brother_scaled
Distance: 1.5465% / 0.01546500
53.6 AncestryDNA-2_scaled
28.0 Berber_MAR_ERR
11.8 Berber_Tunisia_Chen
4.2 Spanish_Asturias
2.4 Palestinian

Target: me
Distance: 1.9083% / 0.01908264
46.2 Berber_MAR_TIZ
31.6 Palestinian
19.4 AncestryDNA-2_scaled
2.8 Yoruba

Without Palestinian

Target: me
Distance: 2.7332% / 0.02733195
65.0 AncestryDNA-2_scaled
33.8 Berber_Tunisia_Chen
1.2 Spanish_Asturias

Target: brother_scaled
Distance: 1.5568% / 0.01556842
58.4 AncestryDNA-2_scaled
20.2 Berber_MAR_ERR
17.2 Berber_Tunisia_Chen
4.2 Spanish_Asturias

I don’t understand because she should represent at least 47-50 percent of my dna

strange, dont know why that would happen, maybe try imputing your raw data and getting new coordinates, could make it more accurate

Gentica277282
03-31-2022, 01:14 PM
I got an answer from David so I understand it a lot better now

The G25 is not a genealogical tool. It's an ancestry tool.

His response:
There's a difference between genealogy and fine scale ancestry, because fine scale ancestry is often determined by a few markers and there's a thing called recombination.

So you need a genealogical tool to work out familial relationships.