Helligkorsgade, Kølding, DK (built 1589; photo from WikimediaCommons by User:Mahlum, 2006)
Danish Demes
a Regional DNA Project for Danish Americans and Danes around the World
Borches gård, Kolding, DK (built 1595; photo from WikimediaCommons by User:Mahlum, 2006)
 
Lineages and Results of Y-DNA Testing for Haplogroup G
Y-DNA
Results
Hub
Y-DNA Haplogroups Represented in the Project
and Their Frequency (n tested at FTDNA + n tested elsewhere)
mtDNA
Results
Hub
Project
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E
(1)
F
(1)
G
(5 + 1)
I1
(25)
I1d / I1d1
(12 + 1)
I2
(11)
J
(2)
N
(1)
Q
(1)
R1a
(10 + 2)
R1b
(35 + 2)

Haplogroup G is relatively uncommon in European males (about 2% of the population).  It is believed to have originated in Central Asia, then to have spread to the Middle East and then to have become widespread in Europe during the Neolithic.  The most common subclade among Europeans is G2a, which is found at low frequency among Scandinavians. 

There is a set of G2a modal haplotypes in the Ysearch database (viz., TQYVN, RT3G7, U2WBK, 7HV7Q, HYQVS, YWIHN, and FXYWN) uploaded by Carl-Johan Swärdenheim, founder of the Scandinavian Y-DNA Project at FTDNA.  One of them (viz., TQYVN) is a 16-marker haplotype called the "Security" haplotype because it is intended to be used for deducing Haplogroup G2a when no SNP test has been done.  If someone has a genetic distance greater then 3 from the G2a Security haplotype, it is very unlikely that they are Haplogroup G2a.  The other six G2a haplotypes at Ysearch are modal for various geographical regions, namely:  central European, southern European, southern Britannic, eastern Britannic, Arabian (Al Quraishi), and Indian (Brahmin).

Five members of Danish Demes are Haplogroup G, plus one individual tested outside the project.
Subclade Shorthand D
e
m
e
Surname Earliest Known Patrilineal Ancestor n
G-2a G-P15 1 MORTENSEN Johan Henriksen of Knubbeløkke, Kappel Sogn, Lollands Sønder Herred, Maribo Amt, DK 1
G-2a3b-1 G-P303 2 JENSEN Jens Nielsen (c1780- ) — of Odense Amt, DK 1
LARSEN Jens Nielsen (c1780- ) — of Odense Amt, DK 2
ANDERSEN Eric Rudolf Emeil ANDERSEN 1
3 PETERSEN Peter Hansen of Øster Lindet, Øster Lindet Sogn, Frøs Herred, Haderslev Amt, DK 1
Haplogroup G Subclades as Defined by SNP Mutations
(An equal sign in the ISOGG column means the value is the same as FTDNA.)
Mutations Standard
FTDNA ISOGG
M201 P257=U6 PS94 L154 L204 L 240 U2 U3 U7 U12 U17 U20 U21 U23 U33 G =
____ M285 M342 G-1 =
____ P20 G-1a =
  L201 L202 L303 G-1a1 =
P76 G-1b =
P287 L79 L142.2 G-2 =
____ P15 L31=S149 U5 G-2a =
____ P16 G-2a1 =
____ P18 G-2a1a =
M286 G-2a2 =
L30=S126 L32=S148=U8 L190 G-2a3
____ M406 G-2a3a =
____ L14=S130=U16 L90=S133 G-2a3a-1
L184 L185   G-2a3a-2
L141 G-2a3b =
____ P303=S135 G-2a3b-1 =
____ L140 G-2a3b-1a  =
____ U1 G-2a3b-1a1 =
____ L13=S131=U13 L78 G-2a3b-1a1a =
L43=S147 G-2a3b-1a2 =
____ L42=S146 G-2a3b-1a2a =
L139   G-2a3b-1a3
L177 G-2a3b-2 =
L91 G-2a4 =
M287 G-2b =
L72 L183 M377 G-2c =
____ M283 G-2c1

To view lineages, please scroll to the right.
To view more of the page without scrolling, temporarily reduce the text size or page size in your browser.
Red labels indicate markers that typically mutate more frequently than those labeled in black.
(Empty cells that are darkened indicate tests not ordered.)

Haplogroup G-2a = G-P15
Deme 1
Surname Kit # Ysearch
User ID
Haplotype — as determined by STR testing Known Lineage
Markers 1-12 Markers 13-25 Markers 26-37 Markers 38-67
3
9
3
3
9
0

19
/
3
9
4
3
9
1
a
|
3
8
5
b
|
3
8
5
4
2
6
3
8
8
4
3
9
i
|
3
8
9
3
9
2
ii
|
3
8
9
4
5
8
a
|
4
5
9
b
|
4
5
9
4
5
5
4
5
4
4
4
7
4
3
7
4
4
8
4
4
9
a
|
4
6
4
b
|
4
6
4
c
|
4
6
4
d
|
4
6
4
4
6
0
H4
|
G
A
T
A
IIa
|
Y
C
A
IIb
|
Y
C
A
4
5
6
6
0
7
5
7
6
5
7
0
a
|
C
D
Y
b
|
C
D
Y
4
4
2
4
3
8
5
3
1
5
7
8
a
|
S1
3
9
5
b
|
S1
3
9
5
5
9
0
5
3
7
6
4
1
4
7
2
S1
4
0
6
5
1
1
4
2
5
a
|
4
1
3
b
|
4
1
3
5
5
7
5
9
4
4
3
6
4
9
0
5
3
4
4
5
0
4
4
4
4
8
1
5
2
0
4
4
6
6
1
7
5
6
8
4
8
7
5
7
2
6
4
0
4
9
2
5
6
5
Security G2a Modals Values TQYVN   22 15 10     11     12 11       9 11 11   16     12     14   11   20 15             10                                                             per Carl-Johan Swärdenheim
             
MORTENSEN 66615 QVSBP 15 22 15 10 12 15 11 12 11 12 11 30 16 9 10 11 11 23 16 22 29 12 13 14 14 11 10 19 20 16 14 15 18 33 36 11 10                                                             Pvt9, Pvt8, Peder Mortensen7, Morten Hansen6, Hans Mortensen5, Morten Hansen4, Hans Mortensen3, Morten Johansen2, Johan Henriksen1 of Knubbeløkke, Kappel Sogn, Lollands Sønder Herred, Maribo Amt, DK
This individual has a rare haplotype with no matches (or even near matches) at any level in either the FTDNA or Ysearch databases (at least as of Aug 2008).  A backbone SNP test (M201+) proves he is Haplogroup G; he is deduced to be G-2a based on his haplotype.
   

Haplogroup G-2a3b-1 = G-P303
Deme 2
Surname Kit # Ysearch
User ID
Haplotype — as determined by STR testing Known Lineage
Markers 1-12 Markers 13-25 Markers 26-37 Markers 38-67
3
9
3
3
9
0

19
/
3
9
4
3
9
1
a
|
3
8
5
b
|
3
8
5
4
2
6
3
8
8
4
3
9
i
|
3
8
9
3
9
2
ii
|
3
8
9
4
5
8
a
|
4
5
9
b
|
4
5
9
4
5
5
4
5
4
4
4
7
4
3
7
4
4
8
4
4
9
a
|
4
6
4
b
|
4
6
4
c
|
4
6
4
d
|
4
6
4
4
6
0
H4
|
G
A
T
A
IIa
|
Y
C
A
IIb
|
Y
C
A
4
5
6
6
0
7
5
7
6
5
7
0
a
|
C
D
Y
b
|
C
D
Y
4
4
2
4
3
8
5
3
1
5
7
8
a
|
S1
3
9
5
b
|
S1
3
9
5
5
9
0
5
3
7
6
4
1
4
7
2
S1
4
0
6
5
1
1
4
2
5
a
|
4
1
3
b
|
4
1
3
5
5
7
5
9
4
4
3
6
4
9
0
5
3
4
4
5
0
4
4
4
4
8
1
5
2
0
4
4
6
6
1
7
5
6
8
4
8
7
5
7
2
6
4
0
4
9
2
5
6
5
Security G2a Modals TQYVN   22 15 10     11     12 11       9 11 11   16     12     14   11   20 15             10                                                             per Carl-Johan Swärdenheim
             
JENSEN N54795 PRKGG 14 22 15 10 14 16 11 12 11 12 11 30 17 9 9 11 11 23 16 21 29 11 13 13 14 11 11 20 21 16 14 16 17 35 37 12 10 11 8 15 16 8 11 10 8 12 9 14 22 22 15 10 12 12 16 8 13 23 22 16 13 9 13 10 11 11 11 Pvt… Jens Nielsen1 (c1780- ) — of Odense Amt, DK
LARSEN 140773   14 22 15 10 14 16 11 12 11 12 11 30 17 9 9 11 11 23 16 21 29 11 13 13 14 11 11 20 21 16 14 16 17 35 37 12 10 11 8 15 16 8 11 10 8 12 9 14 22 22 15 10 12 12 16 8 13 23 22 16 13 9 13 10 11 11 11 Pvt… Jens Nielsen1 (c1780- ) — of Odense Amt, DK
LARSEN 140774   14 22 15 10 14 16 11 12 11 12 11 30 17 9 9 11 11 23 16 21 29 11 13 13 14 11 11 20 21 16 14 16 17 35 37 12 10 11 8 15 16 8 11 10 8 12 9 14 22 22 15 10 12 12 16 8 13 23 22 16 13 9 13 10 11 11 11 Pvt… Jens Nielsen1 (c1780- ) — of Odense Amt, DK
ANDERSEN 36772   14 22 15 10 14 16 11 12 11 12 11 30                                                                                                             Pvt… Eric Rudolf Emeil1 ANDERSEN
These individuals have a rare haplotype.  Except for one 24/25 match in another surname, their only matches in the FTDNA database are with each other.
#N54795 has been deep SNP tested with these results:
P15+ P303+
The positive result for P15 proves he is G-2a; the positive result for P303 proves he is G-2a3b-1.
   
Deme 3
Surname Kit # Ysearch
User ID
Haplotype — as determined by STR testing Known Lineage
Markers 1-12 Markers 13-25 Markers 26-37 Markers 38-67
3
9
3
3
9
0

19
/
3
9
4
3
9
1
a
|
3
8
5
b
|
3
8
5
4
2
6
3
8
8
4
3
9
i
|
3
8
9
3
9
2
ii
|
3
8
9
4
5
8
a
|
4
5
9
b
|
4
5
9
4
5
5
4
5
4
4
4
7
4
3
7
4
4
8
4
4
9
a
|
4
6
4
b
|
4
6
4
c
|
4
6
4
d
|
4
6
4
4
6
0
H4
|
G
A
T
A
IIa
|
Y
C
A
IIb
|
Y
C
A
4
5
6
6
0
7
5
7
6
5
7
0
a
|
C
D
Y
b
|
C
D
Y
4
4
2
4
3
8
5
3
1
5
7
8
a
|
S1
3
9
5
b
|
S1
3
9
5
5
9
0
5
3
7
6
4
1
4
7
2
S1
4
0
6
5
1
1
4
2
5
a
|
4
1
3
b
|
4
1
3
5
5
7
5
9
4
4
3
6
4
9
0
5
3
4
4
5
0
4
4
4
4
8
1
5
2
0
4
4
6
6
1
7
5
6
8
4
8
7
5
7
2
6
4
0
4
9
2
5
6
5
Security G2a Modals TQYVN   22 15 10     11     12 11       9 11 11   16     12     14   11   20 15             10                                                             per Carl-Johan Swärdenheim
             
 PETERSEN 116172 824ZU 13 22 15 10 14 14 11 13 11 12 11 29 17 9 9 11 11 23 16 21 31 12 13 13 13 10 11 20 20 16 13 17 18 35 38 11 10 11 8 15 16 8 11 10 8 11 11 14 21 22 14 11 12 12 14 8 12 22 22 17 12 11 13 10 11 11 12 Pvt7, Pvt6, Alva Elwood5 MacLAUGHLAN, a.k.a., Alfred Emil5 PETERSEN, Hans Peter4, Lorenz Peter3, Hans Peter2, Peter Hansen1 — of Øster Lindet, Øster Lindet Sogn, Frøs Herred, Haderslev Amt, DK
This individual has a few dozen 12/12 matches and a handful of 23/25 matches in the FTDNA database, but he has no near or full matches at 37 (or 67) markers at FTDNA or Ysearch.  His social surname is MacLAUGHLAN, but he is biologically a PETERSEN.
Our subject has been deep SNP tested with these results:
M201+ P15+ P303+ P16- M286- M406-
The positive test for M201 proves he is Haplogroup G; the positive test for P15 proves he is G-2a, and the positive test for P303 proves he is G-2a3b-1.  The negative test for P16 proves he is not G-2a1, the negative test for M286 proves he is not G-2a2, and the negative test for M406 proves he is not G-2a3a.
   

What constitutes a match?
Matches in other surnames are usually mere coincidence, so please ignore them — I'll let you know when you shouldn't!
For 12 markers:  9 or less is a non-relative; 10-12, please see this table compiled by FTDNA.
For 25 markers:  21 or less is a non-relative; 22-25, please see this table compiled by FTDNA.
For 37 markers:  31 or less is a non-relative; 32-37, please see this table compiled by FTDNA.
For 67 markers:  57 or less is a non-relative; 58-67, please see this table compiled by FTDNA.
For 111 markers:  100 or less is a non-relative; 101-111, please see this table compiled by FTDNA.
For any test:  0 matching markers, please contact NASA.

 
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Memorial stone for King Erik I (c1060-1103), a.k.a., 'Erik the Good' or Erik Ejegod; Borgvold, Viborg Amt, DK (photo from WikimediaCommons by User:Calvin, 2007).
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Viking burial ground (700-1150 CE), Lindholm Høje, Aalborg Amt, DK (photo from WikimediaCommons by User:Bunnyfrosch, 2007).

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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