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Thread: U7 mtDNA... Where on Earth Did This Come From...?

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    U7 mtDNA... Where on Earth Did This Come From...?

    So my dad's Y haplogroup is R1a, no big surprise in Europe, comes from Yorkshire-Linconshire area in England.

    My materal mtDNA on the other hand... is odd. It turned out to be U7, which is pretty rare in Europe (although it is at least Indo-European).

    I found this on wikipedia:
    Many European populations lack Haplogroup U7 (named 'Ulaana' by Bryan Sykes), but its frequency climbs over 4% in the Near East and up to 5% in Pakistan, reaching nearly 10% level in Iranians. However, it was present in Northern Europe before the Middle Ages, and it was carried by a wealthy woman, perhaps of their Royal Clan, buried in the Viking Oseberg ship in Norway. In India, haplogroup U7 frequency peaks at over 12% in Gujarat, the westernmost state of India, while for the whole of India its frequency stays around 2%. Expansion times and haplotype diversities for the Indian and Near and Middle Eastern U7 mtDNAs are strikingly similar. The possible homeland of this haplogroup spans Indian Gujarat and Iran because from there its frequency declines steeply both to the east and to the west. If the origin were in Iran rather than in India, then its equally high frequency as well as diversity in Gujarat favors a scenario whereby U7 has been introduced to the coastal western India either very early, or by multiple founders.
    I find it really odd to have this strange haplogroup and can find almost no information about it apart from that it seems to be really rare in these parts (which I don't think casts aspersions on my Europeaness since if you go far back enough most people will find one or two weird ancestors and in this case it just happened to be a direct maternal one).

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    Senior Member Ægir's Avatar
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    It could just be that for whatever reason (having more male children, having a mutation that lowered birthing, or just plane chance of war and conquest) the haplogroup decreased in Europe or maybe not as much made it there when the Indo-Europeans came in. In other words some may have come the western rout of expansion and more went on the eastern rout hence the higher levels in the eastern area of Indo-European conquest. Assuming of course that the Indo-Europeans Began in the steeps or Anatolia. You may find it interesting to note that much of the mdna haplogoups in Europe are pre-Indo-European and as such it shows that there were more males who mated with the local females. You may actually be more "pure" Indo-European and the fact that it was found in a royal grave may suggest this as well.
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    U7 has been found in an Iron Age (Late Hallstatt) German burial site. Ablutive may have got it from the Anglo-Saxons.

    An ancient DNA perspective on the Iron Age “princely burials” from Baden-Wurttemberg, Germany.
    ESTHER J. LEE1, CHRISTOPH STEFFEN1, MELANIE HARDER1, BEN KRAUSE-KYORA1, NICOLE VON WURMB-SCHWARK2 and ALMUT NEBEL3.

    During the Iron Age in Europe, fundamental social principles such as age, gender, status, and kinship were thought to have played an important role in the social structure of Late Hallstatt and Early Latene societies. In order to address the question of kinship relations represented in the Iron Age “princely burials” that are characterized by their rich material culture, we carried out genetic analysis of individuals associated with the Late Hallstatt culture from Baden-Wurttemberg, Germany. Bone specimens of thirty-eight skeletal remains were collected from five sites including Asperg Grafenbuhl, Muhlacker Heidenwaldle, Hirschlanden, Ludwigsburg, and Schodeingen. Specimens were subjected to DNA extraction and amplification under strict criteria for ancient DNA analysis. We successfully obtained mitochondrial DNA (mtDNA) control region sequences from seventeen individuals that showed different haplotypes, which were assigned to nine haplogroups including haplogroups H, I, K, U5, U7, W, and X2b. Despite the lack of information from nuclear DNA to infer familial relations, information from the mtDNA suggests an intriguing genetic composition of the Late Hallstatt burials. In particular, twelve distinct haplotypes from Asperg Grafenbuhl suggest a heterogeneous composition of maternal lineages represented in the “princely burials”. The results from this study provide clues to the social structure reflected in the burial patterns of the Late Hallstatt culture and implications on the genetic landscape during the Iron Age in Europe.
    http://dienekes.blogspot.co.uk/search/label/U7

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    Senior Member Ægir's Avatar
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    That certainly makes sense and supports "my theory" as to how it got into Europe and it would help to explain how it could have gotten to England. Do you know if they have documentation of any Y-Chromosome Haplogroups from that same site in Bavaria?
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    Quote Originally Posted by Ægir View Post
    Do you know if they have documentation of any Y-Chromosome Haplogroups from that same site in Bavaria?
    Sorry no.

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    U groups are the oldest to inhabit europe, not sure you are using the right term when you say it is indo-european (a linguistic group) but you should rather think of it as native european.
    __________________________________
    Paternal Haplogroup: R1b1b2a1a1*
    Maternal Haplogroup: U5a1a1
    Ancestry Painting: Europe 100%
    Global Similarity: Northern Europeans

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    Quote Originally Posted by Oski View Post
    U groups are the oldest to inhabit europe, not sure you are using the right term when you say it is indo-european (a linguistic group) but you should rather think of it as native european.
    Well apparently U7 is associated with Indo-Europeans, hence it being highly frequent in Gujarat and Iran (the Indo-Aryan side of things).

    That is an interesting question though, if U is the oldest European group, how did it end up in the Ur-Heimat of the Indo-Europeans? Although if they originate from the Caucuses it's hardly a stretch to imagine their having seed-stock originally from Europe. Although not so pc
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    Quote Originally Posted by ablutive View Post
    Well apparently U7 is associated with Indo-Europeans, hence it being highly frequent in Gujarat and Iran (the Indo-Aryan side of things).

    That is an interesting question though, if U is the oldest European group, how did it end up in the Ur-Heimat of the Indo-Europeans? Although if they originate from the Caucuses it's hardly a stretch to imagine their having seed-stock originally from Europe. Although not so pc
    Exactly. That is why I theorized that it was one that came in with the I-E invasion. When you look at other haplogroups (male and female) you will sometimes find part of the group in Europe before the I-E but another will certainly be tied with the I-E. One example of this is Y Haplogroup G2a3b1a. Certainly G is found in Europe but not evenly distributed at all. Whereas you can find G2a3b1a evenly distributed throughout I-E lands including in India where it is tied only to upper cast. In Europe as well it is found in Royal tombs. So like with G where some Gs are pre I-E and others are I-E the distrabution of U7 seems to make it I-E whereas the other Us are pre.
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    U7 could have passed through to W Europe from the geographically eastern Germanics (not just E Germanics) who mixed with Iranian nomads. There is no real mystery as to its presence westwards: even the Iron Age Hallstatt culture has its obvious steppe affinities. You should probably not think of U7 bearers as looking like Indians.

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