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Archiver > GENEALOGY-DNA > 2004-06 > 1087663113


From: "Ken Nordtvedt" <>
Subject: Regional Variations in I1a
Date: Sat, 19 Jun 2004 10:38:33 -0600


I return to my beloved I1a (I can't help it both of my grandfather's are I1a). Using YHRD database, I pick out I1a by criteria "14" repeats at DYS19 and "11" repeats at DYS392, and looking at only "22" or "23" repeats at DYS390. This should exclude most other European haplogroups while not losing me too many of the I1a. Below I have tabulated the ratio (number of DYS390 = "22")/(number of DYS390 = "23")

The entire European population of these special "22" and "23" is about 800 each.

There seems to be some interesting geographical variation. I have clustered the regions into three groups. Group 1 is the Netherlands/Denmark/NW Germany region. Group 2 is eastern plus south/central Germany. Group 3 is Norway and Sweden.

Friesland --- 7/1
Limburg --- 6/1
Leiden --- 14/3
Gronningen --- 7/3
Denmark --- 8/3
Hamburg ---8/4
Muenster --- 25/6

Chemitz --- 41/36
Leipzig --- 38/29
Mageburg 28/14
Rostock --- 10/15
Munich --- 20/12
Freiburg --- 29/23
Tyrol --- 10/13
Stuttgart --- 14/8

W Norway --- 2/10
S Norway --- 1/4
Oslo --- 1/3
C Norway --- 3/8
N Norway --- 5/7
E Norway 11/12
Sweden --- 41/66

London --- 15/7
Ireland --- 2/2

Some Observations.

If most Norse Vikings who moved into British Isles came from western, southern or Oslo fjord Norway, then maybe they brought a low "22"/"23" ratio.

Anglo-Saxons/Frisians and Danish Vikings probably brought a high "22"/"23" ratio.

London I1a people seem primarily to descend from the Anglo-Saxons and Danes.

Too bad we don't have better statistics for Ireland. One can conjecture from history a lower "22"/"23" ratio.

Again, the Netherlands/Denmark/NW Germany region seems unusual. Remember; this same area is a hotspot for I1c and has an unusual (22+23)/(24+25) ratio for R1b. Did some aliens land in this area a few thousand years ago.

The YHRD European sample population is about 15,000. By the time you divide it up into 100 regions you see the limitations of fine regional differences that can be seen. You have to start putting neighboring regions back together again to really feel confident about the trends.

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