At the bottom of EHSTRAFD approach stays peer-review journals standardization trend in publishing populational data and most important, the allele frequencies gradient distribution over vast geographical areas.
2.
"' Haplogroup I1-M253 "'( M253, M307, P30, P40 ) displays a very clear frequency gradient, with a peak frequency of approximately 35 % among the populations of southern Norway, southwestern Sweden, and Denmark, and rapidly decreasing frequencies toward the edges of the historically Germanic-influenced world.
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