Angoliga
11-10-2020, 06:33 AM
2 questions: how did you find that this WHG signal did not come in via a more generic West Eurasian route? I.e. that it combined with other West Eurasian ancestries in that run in a middle eastern composite and came in that way?
Good question! Without getting too technical/off-topic, here's a few reasons why a more westerly/west-eurasian route might be more favorable vs. SW-Asia ...
Against a wider-dataset of WHG-related source-samples (*source samples cited below), the signal prefers a more extreme westerly West-Eurasian affinity (Iberian/Atlantic):
Target: UG_KAKWA3
Distance: 1.0721% / 0.01072054
72.0 Sudanese
15.4 Yoruba
5.6 Mbuti
2.8 IRN_Wezmeh_N
1.8 ZAF_2000BP
1.6 Wales_Meso
0.8 Levant_PPNC
Target: UG_KAKWA2
Distance: 0.9241% / 0.00924065
73.0 Sudanese
16.0 Yoruba
6.4 Mbuti
1.8 Iberia_Northwest_Meso
1.4 IRN_Wezmeh_N
1.2 ZAF_2000BP
0.2 Levant_Natufian
Target: UG_KAKWA
Distance: 0.9416% / 0.00941578
76.4 Sudanese
12.4 Yoruba
7.2 Mbuti
1.6 ZAF_2000BP
1.4 Iberia_Northeast_UP_Azilian
0.8 GEO_CHG
0.2 IRN_Wezmeh_N
Source samples:
Yoruba,-0.0553545,0.0061545,0.0058636,0.0051727,0.0001636, 0.0044727,-0.0189,0.0207,-0.0239,0.0179818,0.0028455,0.0005273,0.0155091,0.0 006909,0.0092273,-0.0072455,0.0054273,0.0003545,0.0047909,-0.0023909,0.0012455,0.0018727,-0.0014273,-0.0003909,-0.0003545
Sudanese:SUDANESE7,-0.0502,0.0046,-0.0019,-0.0023,-0.0017,-0.001,-0.0034,0.0082,0.0442,-0.0598,-0.0114,0.0139,-0.0317,0.0005,0.0097,-0.0179,0.0166,-0.0095,0.0208,-0.0186,-0.0008,0.0039,-0.0008,-0.0014,0.0031
Mbuti,-0.05688,0.00582,0.00676,0.01158,-0.00036,0.00238,0.15588,-0.12716,0.00866,0.01638,-0.0055,0.14668,0.08506,0.00074,0.00762,-0.00106,0.00072,-0.04094,0.01132,0.00298,0.0049,-0.0015,-0.00356,0.0021,-0.00058
ZAF_2000BP,-0.0563667,0.0055,0.0068667,0.0108,4e-04,-0.0011,0.1140667,-0.0898,0.0051,0.0084333,0.0053667,-0.0440333,-0.0145333,0.0046667,0.0175,-0.0152,0.0262333,0.2325333,-0.0761667,0.0048333,-0.0271333,-0.0031667,0.0025667,-0.0024333,-0.0003333
IRN_Wezmeh_N,0.0033,0.0071,-0.0439,-0.0051,-0.0382,0.0054,0.0076,-0.0014,-0.035,-0.0257,0.0019,-0.0021,0.0045,5e-04,0.0163,0.04,-0.009,8e-04,0.0116,-0.0282,0.0075,-0.0192,-0.0054,-0.0273,0.0167
IRN_Ganj_Dareh_N,0.00378,0.00654,-0.04112,0.00146,-0.03986,0.00844,0.00728,-0.00052,-0.04036,-0.02986,-0.00174,-0.00108,0.00302,-0.00456,0.02332,0.04234,-0.00416,0.00542,0.01086,-0.02672,0.00686,-0.02332,-0.00898,-0.03264,0.01856
GEO_CHG,0.008,0.0101,-0.0221,-0.001,-0.028,0.0074,0.0106,-8e-04,-0.0627,-0.041,-0.0039,0.016,-0.0369,0.0032,0.0196,-0.0247,0.0183,-0.0106,-0.0177,0.0278,0.0271,-0.0057,0.0053,-0.0214,-0.0017
MAR_Taforalt,-0.01668,0.00802,-0.00644,-0.0265,0.00898,-0.0198,-0.03004,0.00798,0.07598,0.00192,0.01288,-0.02124,0.05026,-0.0373,0.05246,-0.02738,0.00404,-0.05218,-0.1133,0.03118,-0.0302,-0.10152,0.05924,-0.01142,0.01374
Levant_Natufian,0.0018,0.0141,-0.01,-0.04295,0.01,-0.0285,-0.0109,-0.0076,0.0559,0.0011,0.02045,-0.01485,0.05145,0.00155,0.0113,0.0068,-0.01185,-8e-04,-0.01755,0.03265,0.0012,1e-04,-0.00295,-0.0037,0.00525
Levant_PPNC,0.0059,0.0166,-0.0061,-0.0467,0.0093,-0.0258,-0.0059,-0.0078,0.038,0.0208,0.004,-0.0088,0.022,-2e-04,-0.011,0.0064,-7e-04,-0.0061,-0.0108,0.0099,-0.008,0.0082,0.0024,0.0025,-0.0016
Yamnaya_UKR,0.0105,0.0086,0.012,0.03425,-0.0092,0.01525,0.0036,-0.0015,-0.0255,-0.03885,0.00015,0.00295,-0.0029,-0.0147,0.0238,0.0081,-2e-04,-0.0091,-0.0044,0.0019,-0.00225,0.00035,-0.0076,0.016,0.0026
CHN_Tianyuan,-0.0024,-0.0257,-0.02,0.0221,0.0109,-0.0066,-0.0034,-0.0013,0.0197,0.0117,-0.0039,-0.004,-0.0024,-0.0038,-3e-04,-5e-04,0.0062,0.0019,-9e-04,0.0218,-0.0014,0.0065,-0.0072,-0.009,0.0094
TUR_Barcin_N,0.0103318,0.0177364,0.0009364,-0.0313182,0.0165864,-0.01735,-0.0018545,-0.0030045,0.0177136,0.0443091,0.0049091,0.0079273,-0.0157773,0.0003409,-0.0309318,-0.0076864,0.0178773,0.0015682,0.0108955,-0.0077955,-0.0114,0.0046682,-0.0033455,-0.0026273,-0.0036273
England_Mesolithic:I6767,0.0111,0.0109,0.0538,0.06 1,0.0513,0.02,0.0045,0.0145,0.0423,0.0091,-0.011,-0.0076,0.01,-0.0012,0.0453,0.0494,0.0019,0.0078,-0.0044,0.0508,0.0932,0.0159,-0.0454,-0.1491,0.0162
Wales_Meso:I6754,0.01,0.0115,0.0495,0.0601,0.0528, 0.0231,0.0107,0.0138,0.0443,0.0054,-0.0119,-0.0059,0.0022,-0.0011,0.046,0.0497,0.0004,0.0083,-0.0016,0.0463,0.0849,0.0139,-0.0371,-0.1446,0.016
Wales_Meso:SB460A3_lib,0.0104,0.0113,0.0501,0.0609 ,0.0531,0.023,0.01,0.0128,0.0452,0.0056,-0.0128,-0.0021,0.0045,-0.0012,0.0448,0.0478,-0.002,0.0077,-0.0054,0.0491,0.0845,0.0158,-0.0397,-0.1465,0.0137
Iberia_Northeast_UP_Azilian:BAL051,0.0089,0.0075,0 .0384,0.0507,0.0444,0.0151,0.001,0.0141,0.044,0.01 61,-0.0078,-0.0066,-0.0009,-0.0121,0.0353,0.0378,0.0001,0.0051,-0.0071,0.0468,0.074,0.012,-0.043,-0.1312,0.0101
Iberia_Northwest_Meso:Canes,0.0108,0.01,0.0437,0.0 542,0.0423,0.0192,0.0086,0.0135,0.0388,0.0009,-0.0056,-0.0102,0.016,-0.0003,0.0363,0.0304,-0.0116,0.0073,-0.0097,0.0395,0.0701,0.0059,-0.0348,-0.1198,0.0131
Iberia_Northwest_Meso:Chan,0.0081,0.0055,0.0329,0. 0475,0.0409,0.0151,0.003,0.0122,0.0449,0.0161,-0.0041,-0.0053,0.0072,-0.0124,0.041,0.0366,0.0012,0.0065,-0.0129,0.0489,0.0766,0.0126,-0.041,-0.1362,0.018
Iberia_Southeast_Meso:I10899,0.0086,0.0059,0.0303, 0.0453,0.0367,0.0109,0.0023,0.0075,0.0436,0.0136,-0.0046,-0.008,0.0059,-0.0079,0.0279,0.0341,0.0017,0.0097,-0.0065,0.0416,0.0679,0.0111,-0.0371,-0.1221,0.0162
Iberia_ElMiron:ElMiron,0.0068,0.0044,0.0279,0.04,0 .036,0.0112,0.0008,0.0027,0.0433,0.0134,-0.0033,-0.0019,0.0058,-0.0098,0.0276,0.0314,0.0017,0.0055,-0.0121,0.0366,0.051,0.0064,-0.0296,-0.1071,0.0109
ITA_Grotta_Continenza_Meso:RMPR11,0.0101,0.0108,0. 0525,0.0634,0.0549,0.0224,0.0077,0.0176,0.0517,0.0 169,-0.0116,-0.0085,0.0107,-0.007,0.0544,0.0525,0.0058,0.0116,-0.0114,0.0459,0.0913,0.0078,-0.0523,-0.1614,0.0185
ITA_Grotta_Continenza_Meso:RMPR15,0.0111,0.0111,0. 0541,0.0647,0.057,0.0226,0.0063,0.02,0.0556,0.0135 ,-0.0118,-0.0111,0.0139,-0.0015,0.0493,0.0511,-0.0037,0.0064,-0.0056,0.054,0.0968,0.012,-0.0477,-0.167,0.015
ITA_Grotta_Continenza_Meso:RMPR7,0.0111,0.0112,0.0 532,0.0622,0.0566,0.0215,0.0065,0.016,0.052,0.0143 ,-0.0123,-0.0091,0.0081,-0.0104,0.0528,0.0526,-0.0016,0.0105,-0.0067,0.0531,0.0956,0.0077,-0.0482,-0.1625,0.0216
ITA_Villabruna:Villabruna,0.0107,0.0113,0.0493,0.0 57,0.0508,0.0218,0.0086,0.0156,0.0452,0.0099,-0.01,-0.0108,0.0114,-0.0073,0.0398,0.0508,0.0006,0.0043,-0.0067,0.0428,0.0802,0.0087,-0.0392,-0.1357,0.0161
LUX_Loschbour:I0001,0.0117,0.0105,0.0535,0.0595,0. 0534,0.02,0.0026,0.016,0.0472,0.0125,-0.0128,-0.0108,0.0168,-0.0054,0.0485,0.048,0.0062,0.0053,-0.0106,0.0522,0.0962,0.0155,-0.0482,-0.1458,0.0192
DEU_Meso_BDB:BDB001.merged,0.011,0.0111,0.0515,0.0 626,0.0509,0.0183,0.0099,0.017,0.0444,0.0019,-0.0102,-0.0114,0.018,0.0045,0.0385,0.0472,-0.0052,0.0106,0.0002,0.0425,0.0801,0.0111,-0.0374,-0.1334,0.0194
DEU_Meso_TGM:TGM009.A0101,0.0118,0.0139,0.0413,0.0 378,0.0413,0.0118,0.0054,0.0068,0.0324,0.0118,-0.0069,-0.0079,0.007,-0.0015,0.0184,0.0315,0.009,0.0089,-0.0006,0.0287,0.0621,0.0123,-0.0265,-0.0871,0.0102
ROU_Meso:I2534,0.0118,0.0109,0.0447,0.0521,0.0292, 0.023,0.0046,0.0069,0.0227,-0.0185,0.0016,-0.0131,0.017,-0.0029,0.0195,0.018,-0.0051,0.005,-0.0069,0.0283,0.0418,0.0082,-0.0109,-0.0748,0.0101
WHG:I1875,0.0115,0.0119,0.0508,0.0602,0.0517,0.017 3,0.0067,0.0174,0.0427,0.0041,-0.0099,-0.0103,0.012,-0.0024,0.0353,0.0355,0.0056,0.0146,-0.0026,0.0456,0.0701,0.0074,-0.0393,-0.1188,0.0121
WHG:Rochedane,0.0104,0.011,0.0472,0.057,0.0488,0.0 16,0.0045,0.0149,0.0444,0.0154,-0.009,-0.0108,0.0094,-0.002,0.0433,0.0523,0.0021,0.0112,-0.0122,0.0433,0.0813,0.0107,-0.0412,-0.1482,0.0163
HUN_Koros_N_HG,0.0121,0.0123,0.0478,0.0478,0.0417, 0.0151,0.0064,0.0158,0.0352,0.0038,-0.0032,-0.009,0.0099,-0.0024,0.0211,0.0348,0.0141,0.0047,-0.0066,0.0366,0.049,0.0086,-0.033,-0.1033,0.0109
Target Samples:
UG_KAKWA,-0.0516,0.0051,-0.0005,-0.0005,0.0013,-0.0015,0.0072,-0.0047,0.03,-0.0418,-0.0108,0.0195,-0.0188,0.0002,0.0101,-0.0164,0.0087,-0.0074,0.0138,-0.0165,0.0021,0.0046,-0.0024,-0.0045,0.0031
UG_KAKWA2,-0.0521,0.005,-0.0005,-0.0006,-0.0004,0.0005,0.0056,-0.0005,0.0286,-0.041,-0.009,0.0198,-0.016,-0.0022,0.008,-0.0137,0.0065,-0.0056,0.0146,-0.0123,0.003,0.0042,-0.0025,-0.0036,0.0052
UG_KAKWA3,-0.0521,0.0052,-0.0005,-0.0005,-0.0004,-0.0002,0.0057,-0.0019,0.0276,-0.0402,-0.0105,0.0154,-0.017,0.0009,0.0074,-0.0113,0.0063,-0.0058,0.0148,-0.0144,-0.0005,0.0061,-0.0021,-0.0069,0.0009
Moreover, if this minor WHG-affinity came via a SW-Asian route, it would've already been embedded within the ancestry of the more north/easterly shifted "Sudanese" source sample, rendering the WHG affinity negligible in these Central-Sudanic influenced NW-Ugandan samples.
How do you know that Nilo-saharan speakers (specifically Sudanic speakers) come ultimately from Lake Chad?
With the limited data we have atm, it would be misleading to affirm to "know" the ultimate neolithic origin of the bulk of their ancestry matter-of-factly.
A good guess though based on their ancestral-composition and hydraulic constraints of the Neolithic Subpluvial (Green Sahara) would favour a region within and around the holocenic Lake (Mega) Chad basin.
As their name implies, the Central-"Sudanic" region (https://en.wikipedia.org/wiki/Sudan_(region)), not to be confounded with the modern country Sudan, would be a best-guess imho i.e. a central-sahelian region more westerly shifted than the Ancestral-East-African rich middle-Nile basin.
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