| Haplogroup I is found almost exclusively in Europe where it is represented
in about 20% of the population, though subclade I2 is decidedly less common
than its sister clade, I1. It's difficult to generalize about I2
because it contains a number of geographically distinct subgroups.
One group of I2a was initially concentrated in the Balkans and is called
"Dinaric" (for a mountain range there, the Dinaric Alps), from which location
it dispersed with the retreat of the last ice sheets. Another group
is found around the Baltic and North Sea coastal areas, another in the
British Isles, and another in Sardinia and Iberia. The root clade
of I2b is uncommon, with a probable origin from an Iberian glacial refugium
from which it spread widely in western Europe. The main variety of
I2b, dubbed "Continental," is most common in northwestern Europe, southern
Scandinavia, and Britain. Another group, "Isles," is almost exclusive
to the British Isles, with a concentration in Scotland.
Unlike Haplogroup I1, which is universally 8 at marker DYS455, Haplogroup
I2 is usually 11 at this marker (sometimes 10 and rarely 9). |
So far, eight members of Danish Demes are some form of Haplogroup
I2.
| Subclade |
Most
Downstream
SNP† |
D
e
m
e |
Surname |
Earliest Known
Patrilineal Ancestor |
n |
| I2a2-Dinaric |
M423 |
1 |
JØRGENSEN |
Jens Jørgen Marious Friis
JØRGENSEN (1889-1946) — of Krogsbølle Sogn, Skam Herred,
Odense Amt, DK |
1 |
| I2b1-Root2 |
M223* |
2 |
LARSEN |
Lars Hansen (1751- ) — of Dalby,
Krogstrup Sogn, Horns Herred, Frederiksborg Amt, DK |
1 |
| I2b1-Continental-1 |
M223 |
3 |
ANDERSEN |
Jakob Andersen — of Toksværd,
Toksværd Sogn, Hammer Herred, Præstø Amt, DK |
1 |
| M223* |
4 |
ERIKSEN |
Jørgen ERIKSEN — of Århus,
Århus Sogn, Hasle Herred, Århus Amt, DK |
1 |
| M223 |
5 |
RASMUSSEN |
Rasmus Jensen (1824-1888) — of Horsens
Sogn, Kær Herred, Aalborg Amt, DK |
1 |
| I2b1-Continental-2a |
M223 |
6 |
HAMMER |
Niels HAMMER — of Viborg Amt, DK |
1 |
| M223 |
7 |
CHRISTENSEN |
Nels Peter CHRISTENSEN (1869-1951) — emigrant
from Denmark to Michigan |
1 |
| M223 |
8 |
HANSEN |
Henrick — of Agernæs, Krogsbølle
Sogn, Skam Herred, Odense Amt, DK |
1 |
†Greyed SNPs have merely been deduced; boldfaced
SNPs have actually been tested.
*All currently known downstream SNPs have been tested
and found negative. |
|
| Ken Nordtvedt is the guru researching Hg I subclades (see his Excel
spreadsheet; modals below are his). For a table showing modal
haplotypes for Hg I varieties
in FamilyTreeDNA marker order, please
also see my HTML
transcription of Nordtvedt's spreadsheet. Varieties were determined
using Jim Cullen's
Haplo-I
Subclade Predictor. |
Y-DNA
Haplogroup I2 SNPs and Subclades
(An equal sign in the ISOGG column means the value is the
same as FTDNA.)
| Mutations |
Standard |
| FTDNA |
ISOGG |
| M170 P19 L41 M258 P212
P38 PS76 U179 |
I |
= |
| |
M253 |
I1 |
= |
| P215=M438=S31 L68 |
I2 |
= |
| |
P37.2 |
I2a |
= |
| |
M26 L158 L159.1=S169.1 |
I2a1 |
= |
| |
M161 |
I2a1a |
I2a1a1 |
| L160 |
I2a1b |
I2a1a |
| M423 L178 |
I2a2 |
= |
| |
L69.2(=T)=S163.2 |
|
I2a2a |
| M359=P41.2 |
I2a2a |
I2a2a1 |
| L161 |
I2a2b |
= |
| L233 |
I2a3 |
= |
| P217=S23 L181 L35=S150 L37=S153
P214=M436=S33 P216=S30 P218=S32 |
I2b |
= |
| |
M223 L34=S151 L36=S152
L59 P219=S24 P220=S119 P221=S120 P222=S118=U250 P223=S117 |
I2b1 |
= |
| |
M284 |
I2b1a |
= |
| |
L126=S165 L137=S166 |
I2b1a1 |
= |
| M379 |
I2b1b |
= |
| P78 |
I2b1c |
= |
| P95 |
I2b1d |
= |
| L39=S155 L38=S154 L40=S156 L65.1=S159.1 |
I2b2 |
= |
|
|