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Thread: North/South Genetic Divide in Europe

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    Account Inactive Polak's Avatar
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    North/South Genetic Divide in Europe

    Interesting new study based on powerful genome-wide SNP markers.

    European Population Substructure: Clustering of Northern
    and Southern Populations

    PROVISIONAL ABSTRACT
    The development of methodologies for defining population genetic structure has provided the ability to identify the major ethnic contributions in individual subjects in diverse populations. Using a genome-wide SNP panel we observe population structure in a diverse group of Europeans and European Americans. Under a variety of conditions and tests there is a consistent and reproducible distinction between "northern" and "southern" European population groups: most individual subjects with southern European ancestry (Italian, Spanish, Portuguese, and Greek) have >85% membership in the "south" population; and most northern, western, eastern and central Europeans have >90% in the "north" population group. Ashkenazi Jewish as well as Sephardic Jewish origin also showed >85% membership in the "south" population consistent with a later Mediterranean origin of these ethnic groups. Based on this work, we have developed a core set of informative SNP markers that can control for this partition in European population structure in a variety of clinical and genetic studies.



    http://genetics.plosjournals.org/per...020143.eor.pdf


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    Account Inactive Huzar's Avatar
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    Re: North/South genetic divide in Europe

    Italian population can't be considered like a unique block belonging to southern Europe. It's partially central european.

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    Zyklop's Avatar
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    AW: Re: North/South genetic divide in Europe

    Quote Originally Posted by Huzar
    Italian population can't be considered like a unique block belonging to southern Europe. It's partially central european.
    The Italian subjects were normal healthy volunteers recruited from throughout Italy and including 38 from Northern Italy, 23 from Central Italy and 30 from Southern Italy.
    ...
    Trends in both the Italian and Spanish subjects were also consistent with this north/south pattern: 10/32 subjects from Northern Italy had greater than a 10% Northern component compared with 2/28 from Southern Italy; and 23/43 from northern Spain had greater than a 10% Northern contribution compared to 5/19 from southern Spain.


    Tolerance is a proof of distrust in one's own ideals. Friedrich Nietzsche


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    Account Inactive Polak's Avatar
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    Re: North/South genetic divide in Europe

    That's right, as mentioned in the report there is a northern component in Italy (specifically the north). But it's certainly NOT anywhere as great as that seen in Central Europe (ie. Austria and Hungary).

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    Sv: Re: North/South genetic divide in Europe

    Can we say that according to their samples, that northern Spain has a greater northern contribution than northern Italy, and southern Spain more than southern Italy? If so, I find that rather surprising.

    Quote Originally Posted by Polak
    That's right, as mentioned in the report there is a northern component in Italy (specifically the north). But it's certainly NOT anywhere as great as that seen in Central Europe (ie. Austria and Hungary).

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    Account Inactive Polak's Avatar
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    Re: Sv: Re: North/South genetic divide in Europe

    Quote Originally Posted by Glenlivet
    Can we say that according to their samples, that northern Spain has a greater northern contribution than northern Italy, and southern Spain more than southern Italy? If so, I find that rather surprising.

    Yes, that's what the report says. Well, if you look at the diagrams, it really depends on which factor you're looking at. But overall, yes, that's true.

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    Account Inactive Huzar's Avatar
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    Re: AW: Re: North/South genetic divide in Europe

    Quote Originally Posted by Zyklop
    The Italian subjects were normal healthy volunteers recruited from throughout Italy and including 38 from Northern Italy, 23 from Central Italy and 30 from Southern Italy.
    ...
    Trends in both the Italian and Spanish subjects were also consistent with this north/south pattern: 10/32 subjects from Northern Italy had greater than a 10% Northern component compared with 2/28 from Southern Italy; and 23/43 from northern Spain had greater than a 10% Northern contribution compared to 5/19 from southern Spain.


    It doesn't mean too much. To be from north-Italy doesn't mean to be native of the place. Those volunteers from northItaly could be from anywhere in origin. Besides, in this kind of researches volunteers tend to be from more populated areas, where the ancestry is modified by internal immigration, and this alterates the final result.


    Sorry, Zyk. (next time you'll do better )

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    Account Inactive Huzar's Avatar
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    Re: North/South genetic divide in Europe

    Quote Originally Posted by Polak
    That's right, as mentioned in the report there is a northern component in Italy (specifically the north). But it's certainly NOT anywhere as great as that seen in Central Europe (ie. Austria and Hungary).

    As i said to my bavarian friend, the results are surely alterated by the real origin of those northern italians. It's ridicolous to say that Spain has the same (or major) northern component than Italy. Glenlivet dubts, are absolutely logic.

    Like C. Coon said, Italy only partially belongs to southern Europe, by the moment in its northern part there is the domain of Alpinid (culturally racially, genetically) "world". Northeastern italians aren't that different from , to say, the austrians. That's a fact, not an opinion.



    Anyway, i think the major genetic difference exists between east and west, not between north and south.

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    Account Inactive Polak's Avatar
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    Re: North/South genetic divide in Europe

    From reading this study it seems to me that they took the ancestry of their subjects very seriously indeed.

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    Re: North/South genetic divide in Europe

    Quote Originally Posted by Polak
    From reading this study it seems to me that they took the ancestry of their subjects very seriously indeed.
    Don't be so sure.

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