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)
 
Links Hub for Y-DNA STR Test Results and Lineages
The Lineages and Results for the different haplogroups are on separate pages.
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
Home
Page
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)
Individuals in different haplogroups have no possibility of being closely related, so there is no point in keeping them together on the same page.
Logically, haplotypes (based on STR [short tandem repeat] testing) should correlate with haplogroups (based on SNP [single nucleotide polymorphism] testing), and they do.  The correlation between haplotypes and haplogroups allows one to deduce the haplogroup from the haplotype, without the added expense of SNP testing.  In the results tables, haplogroup designations without a corresponding SNP test are deductions based on the haplotype.  For common haplotypes, the haplogroup deductions are usually correct; for questionable haplotypes, the deductions can be wrong.  In these cases, FTDNA, as part of its "Haplogroup Assurance" policy, will conduct a "backbone" SNP test, free of charge, to securely determine the basic haplogroup. 

The "modal" haplotypes for the haplogroup subclades given in the tables are just that (i.e., the most common pattern for the subclade); there are variations from the modal pattern, and variations at non-defining markers do not necessarily rule out membership in the subclade.  For a broad summary of haplogroups, please see this Chart compiled by FTDNA.

In the lineages, given names and patronymics are in Initial Caps; surnames are in ALL-CAPS.  The surname is given only the first time it appears or when it makes a stable change to an alternate spelling (e.g., as from a Danish to a German or Anglicized spelling).

Viewing Tip:  hold your cursor over a name in the lineage.  The full names of the husband and his spouse(s) will appear in the Status Bar of your browser.

Individuals tested for the National Geographic Society's Genographic Project are, in fact, tested with Family Tree DNA, so sharing results between that project and this one is straightforward and easily accomplished (in either direction) from the test subject's member page — and your project admin encourages you to join both.
SNP is treated, both in speech and in writing, as a word, "snip," not spelled out "S-N-P."  Hg is an abbreviation for Haplogroup.

Y-DNA Surname / Haplogroup Representation
Because of the late adoption of surnames by Danes, it is not expected that, in the Danish Demes project, Y-DNA haplogroups (much less haplotypes) will correlate well with surnames.  In other words, the same surnames will be expected to appear in more than one haplogroup; and, within those haplogroups, with numerous unrelated haplotypes.  The table below is intended to show which surnames occur in which haplogroups, so you'll know which tables to check for representatives.  JENSEN is the most common surname in Denmark, but so far, HANSEN is the most common surname in the project.
Test Subject Surname / Variation(s) Pending F G I1 I1d I2 J Q R1a R1b Totals
ANDERSEN1       2 1 1       3 7
BAKTOFT / BAK / BACH       1             1
BALTZERSEN                   1 1
BENDTSEN         1           1
CHRISTENSEN       2 1 1     1 2 7
DAHL       1             1
ERIKSEN           1       1 2
GLAD         1           1
GRAM                   1 1
HAMMER           1         1
HANSEN2 / HANSON       5 1 1 2   3 4 16
HAUSO                   1 1
HENDRIKSEN         1         1 2
HERTEL           1         1
IVERSEN                   1 1
JACOBSEN / JACOBSON / JAKOBSEN         1       1 1 3
JENSEN3,4     1 2 2         5 10
JORGENSON / JØRGENSEN       1   1   1 1 1 5
JUHL                   1 1
KANTERS           1         1
KEER       1             1
LARSEN   1 2     1     1 1 6
LORENZEN         1         2 3
MADSEN         1           1
MATHIESEN / MATTHIESEN                   2 2
MIKKELSEN       1             1
MORCK / MØRK / MØRCH / MYRK         1           1
MORTENSEN     1               1
NEWMAN / NYMANN / NYMAND         1           1
NIELSEN / NEILSEN / NIELSON / NELSON5       5   1         6
PEEL                 1   1
PETERSEN6 / PETERSON 1   1   1         2 5
RASMUSSEN           1         1
SORENSEN / SØRENSEN         1         1 2
THORSTED                   1 1
TINNING                 1   1
VICK                   2 2
Totals 1 1 5 21 15 11 2 1 9 34 100
    F G I1 I1d I2 J Q R1a R1b  
1including a TOXWENIUS who was formerly ANDERSEN.
2including an ALLEN and a RONDUM who were formerly HANSEN.
3including a WESTERGAARD / WESTERGARD who was formerly JENSEN.
4including an adopted JENSEN whose biological father is uncertain.
5including a SOULE who was originally NEILSEN.
6including a MacLAUGHLAN who was formerly PETERSEN.

Frequency of Danish Y-DNA Haplotypes — YHRD v. Danish Demes
The Y-DNA STR test results in the YHRD.org database can be searched by various criteria.  One kind of search produces the 20 most common 9-marker haplotypes in a geographic region.  Below is a table of the results for a search on "Denmark."  The markers have been re-arranged into FTDNA order to make them easier to compare with project haplotypes.  Haplogroups were predicted using Whit Athey's Haplogroup Predictor; I1 varieties are per Nordtvedt.  "Fq in DK" is the frequency in Denmark in the YHRD database (as of 6 Jul 2006); "Fq in DD" is the frequency in the Danish Demes Project.

Combining the frequencies of the top 20 Danish haplotypes in the YHRD database shows they represent just 29% of the total.  Obviously, most haplotypes (the remaining 71%) occur only once or twice in the YHRD database.

"WAMH" stands for "Western Atlantic Modal Haplotype."  FamilyTreeDNA designates four of the most common 12-marker R1b haplotypes as "WAMH." 

Rank Fq
in
DK
(n)
STR Markers — in FTDNA Order Deduced
Haplogroup-Variety*
Fq
in
DD
SURNAME Origin (Amt)
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
1 8 13 22 14 10 13 14       12 11 28 I1-AngloSaxon 3 HANSEN of Sønderborg, CHRISTENSEN of DK, NIELSEN of København
I1-Transitional 1 BACH / BAKTOFT of Randers
2 6 13 23 14 10 14 14       12 11 28 I1-Norse 4 SØRENSEN and HANSEN of DK, GLAD of Aalborg, BENDTSEN of Ringkøbing
3 6 13 23 14 11 11 14       13 13 29 R-1b1b-2—WAMH 1 JØRGENSEN of Præstø
4 5 13 23 14 10 14 15       12 11 28 I1-ultraNorse 2 JACOBSEN and MØRCH of Århus
5 5 13 24 14 11 11 15       13 13 29 R-1b 0  
6 4 13 24 14 11 11 14       14 13 30 R-1b 0  
7 4 13 24 14 11 11 14       13 13 29 R-1b—WAMH 1 THORSTED of Thisted
R-1b1b-2—WAMH 4 JENSEN of Maribo, CHRISTENSEN of DK, LARSEN of København, JUHL of Vejle
R-1b1b-2a1b—WAMH 1 JAKOBSEN of Frederiksborg
8 3 13 23 14 10 14 14       12 11 29 I1-Norse 0  
9 3 13 23 14 10 13 14       12 11 28 I1-Transitional 0  
10 3 14 22 14 10 13 13       12 11 28 I1-AngloSaxon-5 0  
11 3 13 22 14 10 14 14       12 11 28 I1-AngloSaxon-3 1 NIELSEN of DK 
12 3 13 24 14 11 11 13       13 13 29 R1b 0  
13 3 13 23 14 11 11 15       13 13 29 R1b 0  
14 3 13 23 14 11 11 14       13 13 28 R1b 0  
15 3 13 25 16 10 11 14       13 11 30 R1b 0  
16 2 13 25 16 10 11 14       14 11 31 R1b 0  
17 2 13 25 15 11 11 14       13 11 31 R1b 0  
18 2 13 24 15 10 11 14       13 11 29 R1b 0  
19 2 13 24 15 11 11 14       13 13 29 R1b 0  
20 2 12 22 15 10 13 14       12 11 28 I2 (S31*-A) 0  
>20 175   81 the remaining project members
*Nine markers aren't enough to distinguish between some subclades and varieties, so some nine-marker haplotypes include more than one subclade and variety.

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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). Viking burial ground (700-1150 CE), Lindholm Høje, Aalborg Amt, DK (photo from WikimediaCommons by User:Bunnyfrosch, 2007).