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Thread: The genomic history of the Iberian Peninsula over the past 8000 years

  1. #21
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    One interesting point is the finding of several North African admixture events, with a notable one during or before Roman Conquest. No surprise if you know History (remember from where Hannibal was from). And a clear confirmation of the effects of Reconquista: limited contribution of South Iberia in modern population due to colonization from the North.

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  3. #22
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    Where can I find the excel tables? Does anyone have a link?

  4. #23
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    Quote Originally Posted by rms2 View Post
    Or by the Iron Age IE people with steppe dna had married into non-IE cultures that managed to hang onto their non-IE languages. That sort of thing isn't unheard of. Lots of IE-speaking people were absorbed by the Turks, for example.
    The fact is, in Paraguay the Spanish conquistadors abandoned their language and adopted Guarani, which has been the dominant language in the country until recently.

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  6. #24
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    Quote Originally Posted by RCO View Post
    Good articles.

    In the article: Survival of Late Pleistocene Hunter-Gatherer Ancestry in the Iberian Peninsula
    Probably the Atlantic-Iberian Refugium and the Mediterranean-Italian Refugium

    In the article - The genomic history of the Iberian Peninsula over the past 8000 years - I missed Atlantic-Western Iberian individuals. Let's wait more results.
    I agree with you. This paper was slightly biased towards the Spanish Mediterranean coast.

    I hope, in the future we get more results from Northern Spain, particularly from Asturias, Galicia and Cantabria.

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  8. #25
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    Would anybody look through their BAM files in order to know their Y-chromosome haplogroups as deeply as possible?

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  10. #26
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    The impact of
    mobility from the central/eastern Mediterra
    nean
    during the Classical period is also evident
    in 10 individuals from the 7th to 8th century CE
    site of L'Esquerda in the northeast, who show
    a shift from the Iron Age population in the
    direction of present-day Italians and Greeks (Fig.
    1D) that accounts for approximately one-quarter
    of their ancestry (Fig. 2C and table S17). The same
    shift is also observed in present-day Iberians

    outside the Basque area and is plausibly a
    consequence of the Roman presence in the pe
    ninsula,
    which had a profound cultural impact
    and, according to our data, a substantial genetic
    impact too.

    This was something I was saying a few weeks ago here, which was estimated by using those Mediterranean samples form Collegno which should cluster close to where Imperial Era Romans did. It seemed plausible the impact was generally 20-25% in most of the peninsula, with a few outliying regions who score a bit more or less, like the Baleares or Cantabria respectively.
    Romani ite domum!


    [1] "distance%=1.1336"

    Portuguese

    Hallstatt_Bylany,37.8
    Iberia_BA,34
    Italy_Medieval_Collegno_o1,23.8
    Iberomaurusian,4.4



    [1] "distance%=0.8771"

    Spanish_Extremadura

    Hallstatt_Bylany,35.8
    Iberia_BA,35.6
    Italy_Medieval_Collegno_o1,24.2
    Iberomaurusian,4.4



    [1] "distance%=1.3905"

    Spanish_Galicia

    Iberia_BA,39.6
    Hallstatt_Bylany,31.6
    Italy_Medieval_Collegno_o1,24.8
    Iberomaurusian,4



    [1] "distance%=1.2659"

    Spanish_Baleares

    Hallstatt_Bylany,39.8
    Italy_Medieval_Collegno_o1,30.2
    Iberia_BA,29.4
    Iberomaurusian,0.6



    [1] "distance%=1.3863"

    Spanish_Cantabria

    Iberia_BA,49.6
    Hallstatt_Bylany,33.2
    Italy_Medieval_Collegno_o1,16.2
    Iberomaurusian,1


    [1] "distance%=2.2305"

    Ruderico

    Hallstatt_Bylany,43.4
    Iberia_BA,34.4
    Italy_Medieval_Collegno_o1,18.4
    Iberomaurusian,3.8
    Last edited by Ruderico; 03-15-2019 at 05:15 PM.
    YDNA - E-Y31991>PF4428>BY36857. Domingos Rodrigues, b. circa 1680 Hidden Content , Viana do Castelo, Portugal
    mtDNA - H20. Maria Josefa de Almeida, b. circa 1750 Hidden Content , Porto, Portugal

    Global25 PCA West Eurasia dataset Hidden Content
    Hidden Content


    [1] "distance%=1.7726"

    Ruderico

    Celtiberian,77.6
    Roman_Imperial_proxy,13.6
    Guanche,8.8

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  12. #27
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    Quote Originally Posted by artemv View Post
    . . .

    Matrilocality means that both local males and migrant males would often move to the same community after marriage. How could it happen that close to 100% of local Y-chromosomes were replaced in this case?
    Time and drift, luck of the y-chromosome crap shoot. Introduce some outsider y-dna that by the luck of the draw or some genetic advantage proves more prolific than the local stuff, and time does the rest. It might help if marrying certain types of outsiders was considered prestigious or otherwise advantageous.

    It is a fact that the Basques at least had a matrilocal marriage tradition and a matrifocal culture, which worshiped the mother goddess Mari. Grooms went to live with the bride's family, which preserved its own language and cultural traditions.
     


    Hidden Content


    Y-DNA: R1b-FGC36981 (L21> DF13> Z39589> CTS2501> Z43690> Y8426> BY160> FGC36974>FGC36982 >FGC36981)

    Additional Data:
    Lactase Persistent:
    rs4988235 AA (13910 TT)
    rs182549 TT (22018 AA)

    Red Hair Carrier:
    Arg160Trp+ (rs1805008 T) aka R160W

    Dad's mtDNA: K1a1

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  14. #28
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    Regarding the Y chromosome replacement, I can imagine a scenario like that outlined in Zeng 2018. Endemic warfare with the steppe bearing newcomers may have depleted the native male lines, which were then replaced by intermarriage. Since the culture was likely matrilocal, the language and culture were preserved to a greater extent.

    After all, I2a was not a native european farmer clade either. Something like this had already occurred once.

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  16. #29
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    Quote Originally Posted by rms2 View Post
    Grooms went to live with the bride's family, which preserved its own language and cultural traditions.
    What a sucky life for my ancestors then! Living with the in-laws ain't exactly rainbows and sunshine, no wonder they lost their language.

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  18. #30
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    Here is the collective samples from the Basque Heartlands (Gipuzkoa)+Periphery(Alava), from the newest study and previous studies:

     

    I11300 F J2a1a1 .. 3400–3000 BCE Jentillarri, Enirio-Aralar, Gipuzkoa, Basque Country 43.0866 -2.2154 Spain
    I11301 F H1j8 .. 3341–3030 cal BCE (4480±30 BP, Beta 484117) Jentillarri, Enirio-Aralar, Gipuzkoa, Basque Country 43.0866 -2.2154 Spain
    I11248 M J2a1a1 I2a2a2a 3400–3000 BCE Jentillarri, Enirio-Aralar, Gipuzkoa, Basque Country 43.0866 -2.2154 Spain
    I11249 M U5b1 I2a2a2 3400–3000 BCE Jentillarri, Enirio-Aralar, Gipuzkoa, Basque Country 43.0866 -2.2154 Spain
    I7605 M H3 I2a2a 3500–2900 BCE Mandubi Zelaia, Ezkio-Itsaso, Gipuzkoa, Basque Country 43.085823 -2.251197 Spain
    I7603 M K1a2b I2a2a 3500–2900 BCE Mandubi Zelaia, Ezkio-Itsaso, Gipuzkoa, Basque Country 43.085823 -2.251197 Spain
    I7602 M J1c1 I2a2a2a 3500–2900 BCE Mandubi Zelaia, Ezkio-Itsaso, Gipuzkoa, Basque Country 43.085823 -2.251197 Spain
    I7604 M H1ak I2a2a2a 3500–2900 BCE Mandubi Zelaia, Ezkio-Itsaso, Gipuzkoa, Basque Country 43.085823 -2.251197 Spain
    I7606 M U5b1+16189+@16192 I2a2a2 3500–2900 BCE Mandubi Zelaia, Ezkio-Itsaso, Gipuzkoa, Basque Country 43.085823 -2.251197 Spain
    I3272 M X2b I2a2 3263-2903 calBCE (4380±40 BP, Beta-288933) La Chabola de la Hechicera, Alava, Basque country 42.57 -2.55 Spain
    I3273 F J2a1a1 .. 3627-3363 calBCE (4670±40 BP, Beta-288935) La Chabola de la Hechicera, Alava, Basque country 42.57 -2.55 Spain
    I1975 M J1c1 I2a2 3090-2894 calBCE (4350±40 BP, Beta-288937) La Chabola de la Hechicera, Alava, Basque country 42.57 -2.55 Spain
    I1976 M H3 I2 2571-2347 calBCE (3960±30 BP, Beta-299306) El Sotillo, Alava, Basque Country 42.57 -2.62 Spain
    I2473 M H3 I2a2a 2916-2714 calBCE (4250±30 BP, Beta-299305) El Sotillo, Alava, Basque Country 42.57 -2.62 Spain
    I2467 M X2b I2a2a 2481-2212 calBCE (3900±40 BP, Beta-299300) El Sotillo, Alava, Basque Country 42.57 -2.62 Spain
    I1843 F U5b1 .. 3092-2877 calBCE [3092-2918 calBCE (4390±30 BP, Beta-301225), 3011-2877 calBCE (4290±30 BP, Beta-301226)] Alto de la Huesera, Alava, Basque country 42.57 -2.57 Spain
    I1981 F J1c1 .. 3014-2891 calBCE (4320±30 BP, Beta-301223) Alto de la Huesera, Alava, Basque country 42.57 -2.57 Spain
    I3276 M V G2a2a 3092-2918 calBCE (4390±30 BP, Beta-301225) Alto de la Huesera, Alava, Basque country 42.57 -2.57 Spain
    I3277 F U5b2b .. 3100-2850 BCE (based on other dated samples in same layer) Alto de la Huesera, Alava, Basque country 42.57 -2.57 Spain
    I3269 M U5b2b3a I2a2a2a 3350-2750 BCE [3022-2779 calBCE (4290±40 BP, Beta-137895); 3090-2900 calBCE (4360±40 BP, Beta-137896); 3310-2904 calBCE (4390±40 BP, Beta-148054) three dates of the whole stratigraphy of the site] Las Yurdinas II, Alava, Basque Country 42.63 -2.7 Spain
    I3270 F J2a1a1 .. 3350-2750 BCE [3022-2779 calBCE (4290±40 BP, Beta-137895); 3090-2900 calBCE (4360±40 BP, Beta-137896); 3310-2904 calBCE (4390±40 BP, Beta-148054) three dates of the whole stratigraphy of the site] Las Yurdinas II, Alava, Basque Country 42.63 -2.7 Spain
    I3271 F K1a4a1 .. 3350-2750 BCE [3022-2779 calBCE (4290±40 BP, Beta-137895); 3090-2900 calBCE (4360±40 BP, Beta-137896); 3310-2904 calBCE (4390±40 BP, Beta-148054) three dates of the whole stratigraphy of the site] Las Yurdinas II, Alava, Basque Country 42.63 -2.7 Spain
    I1838 F J1c3 .. 3354-2943 calBCE (4470±50 BP, Poz-83429) Las Yurdinas II, Alava, Basque Country 42.63 -2.7 Spain


    14 Y-DNA Haplogroups sequenced thus far, the Heartlands had 7 I2a2a, with 3 further sub-classified as I2a2a2a, and 2 as I2a2a2. The periphery had 6 I2, with 1 I2a2a2a, 2 I2a2a and 2 I2a2. Overall it seems the frequency of I2/I2a2 was 13/14 or 92.88%, with a sole G2a2a farmer lineage amongst them. I will like to publicly congratulate Richard Stevens for predicting that pre-Beaker Basques were mostly I2a2, he was right. It seems that farmers lineages (G2a, H) did not proliferate much in the Basque area, unlike in its contemporary areas such as Treilles were most lineages where G2a-P15. Funny how the Basque went from being 92.48% I2/I2a2 with 71.43% I2a2a/I2a2a2 to being ~93% R1b-M269 with ~71% R1b-DF27.

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