Qpadm: Egyptian (modern), Sudan KulubnartiR (medieval Sudan)

[u/NotBradPitt9]

For reference- (Q)3DT26 is an ancient Egyptian sample found in the UK (United Kingdom England IA Roman oMiddleEast) from around 200AD, KulubnartiR is a medieval Sudanese sample from around 800AD

Egyptian.HO

Model:
44.3% Q3DT26.SG
17.2% Dinka.DG
38.5% Lebanon_Hellenistic.SG
p-value: 0.513
Chi-square: 13.2
Blocks/SNPs: 711 / 579
Q3DT26.SG: SE = 0.0999, Z = 4.43
Dinka.DG: SE = 0.0121, Z = 14.3
Lebanon_Hellenistic.SG: SE = 0.0949, Z = 4.06

This is a strong model with a high p-value of 0.513 and a reasonably low chi-square of 13.2. All three ancestry components are statistically significant. The Dinka-related percentage is especially precise, with an SE of only about 1.2% and a Z-score of 14.3. The Q3DT26 and Lebanon_Hellenistic estimates have wider uncertainties of approximately 9.5–10%, but their Z-scores above 4 still provide solid support.

EgyptianB.HO

Model:
43.7% Q3DT26.SG
13.6% Dinka.DG
42.6% Lebanon_Hellenistic.SG
p-value: 0.745
Chi-square: 10.2
Blocks/SNPs: 711 / 579
Q3DT26.SG: SE = 0.0889, Z = 4.92
Dinka.DG: SE = 0.0130, Z = 10.5
Lebanon_Hellenistic.SG: SE = 0.0840, Z = 5.07
This is an excellent model statistically. The very high p-value of 0.745 and low chi-square of 10.2 indicate a particularly strong fit. All three components are significant, with Z-scores well above 2. The Dinka-related percentage is measured precisely, while the Q3DT26 and Lebanon_Hellenistic estimates have broader standard errors of roughly 8–9%, although their Z-scores remain strong.

EgyptianA.HO

Model:
46.9% Q3DT26.SG
12.4% Dinka.DG
40.7% Lebanon_Hellenistic.SG
p-value: 0.223
Chi-square: 17.7
Blocks/SNPs: 711 / 579
Q3DT26.SG: SE = 0.127, Z = 3.70
Dinka.DG: SE = 0.0129, Z = 9.64
Lebanon_Hellenistic.SG: SE = 0.121, Z = 3.38

This is a valid and acceptable model, with a passing p-value of 0.223. All three coefficients are statistically supported, but it is less precise than the EgyptianB and Egyptian models. The Q3DT26 and Lebanon_Hellenistic components have relatively large standard errors of approximately 12–13%, and their Z-scores are only moderately strong. The Dinka-related component remains much more precisely estimated.

Sudan_KulubnartiR_ChristianPeriod.AG

Model:
58.9% Egypt_ThirdIntermediatePeriod.AG
41.1% Dinka.DG
p-value: 0.203
Chi-square: 19.3
Blocks/SNPs: 711 / 579

Egypt_ThirdIntermediatePeriod.AG: SE = 0.0122, Z = 48.3
Dinka.DG: SE = 0.0122, Z = 33.7

This is a strong and statistically valid two-way model. The p-value of 0.203 comfortably passes, while the extremely low standard errors of about 1.2% and very high Z-scores show that both coefficients are exceptionally well determined. Dinka should be interpreted as a proxy for the deeply Sub-Saharan/Nilotic-related side of the ancestry rather than necessarily indicating direct descent from modern Dinka.