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Here's the data about Belarus regarding I2a1bWiik gets an average 29.7% of I. He cites Balanovsky, Rootsi, Laitinen, Rosser and Nasidze, but doesn't give the detail of the calculation.
I checked each study, but only Rosser gives clear percentages of I for Belarus (34%) but the sample is small (n=41) and subclades aren't distinguished. It is the same study that found 42% of haplogroup I in the Bulgarians, with an even smaller sample size (only 24 individuals !).
I will lower the percentage of I2a for Belarus from 25% to 18% in the Y-DNA table. Balanovsky's average is about 18%. If it is less I don't know what other haplogroup to increase without contradicting other studies.
I disagree a bit with your percentages on the iberian peninsula. Iberian Roots with a sample size of more than 2400 has listed the following:
Navarre (Spain): 9.09%
Aragon (Spain): 5.33%
Catalonia (Spain): 2.05%
Basque Country (Spain): 1.84%
Andalucia (Spain): 0.72%
Galicia (Spain): 0.68%
Castille y Leon (Spain): 0.63%
All others (Spain) : <0.5%
Spain (Total): 1.21% (!)
Azores (Portugal): 8.16% (!)
Vila-Real (Portugal): 4.76%
Evora (Portugal): 3.70%
Viseu (Portugal): 3.13%
Santarem (Portugal): 2.98%
Leiria (Portugal): 2.78%
Braganca (Portugal): 2.56%
Aveiro (Portugal): 1.75%
Braga (Portugal): 1.52%
Lisboa (Portugal): 1.15%
All others (Portugal): <1%
Seems like I2a tends too be more on the Atlantic Side than on the Mediterranean Side of Iberia.
All data is from iberianroots dot com
The Instituto Nacional de Estadistica of Spain tell us
that the male population was on 01.01.2012:
23.298.356 total male in Spain
4,180,285 male in Adalucia
1,261,141 male Castilla y Leon
1,069,648 male Castilla – La Mancha
1,070,438 male Pais Vasco
etc.
Do you really think the percentages of Iberian roots and the other mentioned scientific papers are representative?
I think, the samples sizes are too few for a good statistic and it represent only one part of the population.
For a representative statistic you need a good miscellaneous of the population and more samples. For instance:
100.000 of the male Pais Vasco or so?
You are right, there is too much I2a1 in Andalusia and Galicia. I will revise that now.
However, many of the percentages listed by Iberian roots contradict those of scientific papers.
The percentage for Andalusia cannot be 0.72% when Adams et al. (n=168) found 2.5%, Flores et al. (n=258) found 3.2%, and Rootsi et al (n=103) found at least 1% (+2.9% of unidentified I*). That's a sample size of 529, against 276 for Iberian roots.
I2a1 cannot be 0.63% in Castille, when Adams + Flores have 7x I2a1 out of 213 samples (3.3%).
And finally, how could there be only 1.84% of I2a1 in the Basque country when Adams et al. (n=116) found 6.9%, Rootsi et al. (n=100) found 6%, Flores et al (n=45) found 4.4%, and Young et al. (n=126) found 2.4%. That's a total of 387 against 327 for Iberian roots.
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