Haplogroup I-M253

Haplogroup I-M253, also known as I1, is a Y chromosome haplogroup. The genetic markers confirmed as identifying I-M253 are the SNPs M253,M307.2/P203.2, M450/S109, P30, P40, L64, L75, L80, L81, L118, L121/S62, L123, L124/S64, L125/S65, L157.1, L186, and L187. It is a primary branch of Haplogroup I-M170 (I*).

The haplogroup reaches its peak frequencies in Sweden (52 percent of males in Västra Götaland County) and western Finland (more than 50 percent in Satakunta province). In terms of national averages, I-M253 is found in 35–38 per cent of Swedish males, 32.8% of Danish males, about 31.5% of Norwegian males,  and about 28% of Finnish males.

Haplogroup I-M253 is a primary branch of haplogroup I* (I-M170), which has been present in Europe since ancient times. The other primary branch of I* is I-M438, also known as I2.

All known living members descend from a common ancestor 6 times younger than the common ancestor with I2.

Before a reclassification in 2008, the group was known as I1a, a name that has since been reassigned to a primary branch, haplogroup I-DF29. The other primary branches of I1 (M253) are I1b (S249/Z131) and I1c (Y18119/Z17925).

Origins
According to a study published in 2010, I-M253 originated between 3,170 and 5,000 years ago, in Chalcolithic Europe. A new study in 2015 estimated the origin as between 3,470 and 5,070 years ago or between 3,180 and 3,760 years ago, using two different techniques.

In 2007, it was suggested that it initially dispersed from the area that is now Denmark..
However,  Prof. Dr. Kenneth Nordtvedt, Montana State University, regarding the MRCA, in 2009 wrote in a personal message: "We don't know where that man existed, but the greater lower Elbe basin seems like the heartland of I1".

Latest results (Sept. 2019) published by Y-Full suggest I1 (I-M253) was formed 27.500 ybp (95 CI: 29.800 ybp – 25.200 ybp) with TMRCA 4.600 ybp (95 CI: 5.200 ybp – 4.000 ybp).

A 2014 study in Hungary uncovered remains of two individuals from the Linear Pottery culture, one of whom was found to have carried the M253 SNP which defines Haplogroup I1. This culture is thought to have been present between 7,500 and 6,500 years ago.

Structure 
I-M253  (M253, M307.2/P203.2, M450/S109, P30, P40, L64, L75, L80, L81, L118, L121/S62, L123, L124/S64, L125/S65, L157.1, L186, and L187) or I1 
 I-DF29 (DF29/S438); I1a
 I-CTS6364 (CTS6364/Z2336); I1a1
 FGC20030; I1a1a~
 S4767; I1a1a1~
 I-M227; I1a1a1a1a
 A394; I1a1a2~
 Y11221; I1a1a3~
 A5338; I1a1a4~
 CTS10028; I1a1b
 I-L22 (L22/S142); I1a1b1
 CTS11651/Z2338; I1a1b1a~
 I-P109; I1a1b1a1
 I-Y3662; I1a1b1a1e~
 I-S14887; I1a1b1a1e2~
 I-Y11203; I1a1b1a1e2d~
 I-Y29630; I1a1b1a1e2d2~
 CTS6017; I1a1b1a2
 I-L205 (L205.1/L939.1/S239.1); I1a1b1a3
 CTS6868; I1a1b1a4
 I-Z74; I1a1b1a4a
 CTS2208; I1a1b1a4a1~
 I-L287; I1a1b1a4a1a
 I-L258 (L258/S335); I1a1b1a4a1a1
 I-L813; I1a1b1a4a2
 FGC12562; I1a1b1a4a3~
 CTS11603/S4744; I1a1b1b~
 I-L300 (L300/S241); I1a1b1b1a1
 FGC10477/Y13056; I1a1b2
 A8178, A8182, A8200, A8204; I1a1b3~
 F13534.2/Y17263.2; I1a1b4~

 I-Z58 (S244/Z58); I1a2
 I-Z59 (S246/Z59); I1a2a
 I-Z60 (S337/Z60, S439/Z61, Z62); I1a2a1
 I-Z140 (Z140, Z141)
 I-L338
 I-F2642 (F2642)
 I-Z73
 I-L1302
 I-L573
 I-L803
 I-Z382; I1a2a2
 I-Z138 (S296/Z138, Z139); I1a2b
 I-Z2541
I-Z63 (S243/Z63); I1a3
 I-BY151; I1a3a
 I-L849.2; I1a3a1
 I-BY351; I1a3a2
 I-CTS10345
 I-Y10994
 I-Y7075
 I-S2078
 I-S2077
 I-Y2245 (Y2245/PR683)
 I-L1237
 I-FGC9550
 I-S10360
 I-S15301
 I-Y7234
 I-BY62 (BY62); I1a3a3

 I-Z131 (Z131/S249); I1b
 I-CTS6397; I1b1
 I-Z17943 (Y18119/Z17925, S2304/Z17937); I1c

Geographical distribution 
I-M253 is found at its highest density in Northern Europe and other countries that experienced extensive migration from Northern Europe, either in the Migration Period, the Viking Age,  or modern times.  It is found in all places invaded by the Norse.

During the modern era, significant I-M253 populations have also taken root in immigrant nations and former European colonies such as the United States, Australia and Canada.

In 2002 a paper was published by Michael E. Weale and colleagues showing genetic evidence for population differences between the English and Welsh populations, including a markedly higher level of Y-DNA haplogroup I in England than in Wales. They saw this as convincing evidence of Anglo-Saxon mass invasion of eastern Great Britain from northern Germany and Denmark during the Migration Period. The authors assumed that populations with large proportions of haplogroup I originated from northern Germany or southern Scandinavia, particularly Denmark, and that their ancestors had migrated across the North Sea with Anglo-Saxon migrations and Danish Vikings. The main claim by the researchers was

that an Anglo-Saxon immigration event affecting 50–100% of the Central English male gene pool at that time is required. We note, however, that our data do not allow us to distinguish an event that simply added to the indigenous Central English male gene pool from one where indigenous males were displaced elsewhere or one where indigenous males were reduced in number … This study shows that the Welsh border was more of a genetic barrier to Anglo-Saxon Y chromosome gene flow than the North Sea … These results indicate that a political boundary can be more important than a geophysical one in population genetic structuring.

In 2003 a paper was published by Christian Capelli and colleagues which supported, but modified, the conclusions of Weale and colleagues. This paper, which sampled Great Britain and Ireland on a grid, found a smaller difference between Welsh and English samples, with a gradual decrease in Haplogroup I frequency moving westwards in southern Great Britain. The results suggested to the authors that Norwegian Vikings invaders had heavily influenced the northern area of the British Isles, but that both English and mainland Scottish samples all have German/Danish influence.

Prominent members of I-M253 

Alexander Hamilton, through genealogy and the testing of his descendants (assuming actual paternity matching his genealogy), has been placed within Y-DNA haplogroup I-M253.

Birger Jarl, 'Duke of Sweden' of the East Geatish House of Bjälbo, founder of Stockholm; his remains were exhumed and tested in 2002 and found to be also I-M253.

Sting was revealed to belong to haplogroup I1 by the PBS TV series Finding Your Roots.

William Bradford (governor) of the Mayflower, proven through the Mayflower DNA Project

William Brewster (Mayflower passenger) of the Mayflower, proven through the Mayflower DNA Project

Markers

The following are the technical specifications for known I-M253 haplogroup SNP and STR mutations.

Name: M253
Type: SNP
Source: M (Peter Underhill of Stanford University)
Position: ChrY:13532101..13532101 (+ strand)
Position (base pair): 283
Total size (base pairs): 400
Length: 1
ISOGG HG: I1
Primer F (Forward 5′→ 3′): GCAACAATGAGGGTTTTTTTG
Primer R (Reverse 5′→ 3′): CAGCTCCACCTCTATGCAGTTT
YCC HG: I1
Nucleotide alleles change (mutation): C to T

Name: M307
Type: SNP
Source: M (Peter Underhill)
Position: ChrY:21160339..21160339 (+ strand)
Length: 1
ISOGG HG: I1
Primer F: TTATTGGCATTTCAGGAAGTG
Primer R: GGGTGAGGCAGGAAAATAGC
YCC HG: I1
Nucleotide alleles change (mutation): G to A

Name: P30
Type: SNP
Source: PS (Michael Hammer of the University of Arizona and James F. Wilson, at the University of Edinburgh)
Position: ChrY:13006761..13006761 (+ strand)
Length: 1
ISOGG HG: I1
Primer F: GGTGGGCTGTTTGAAAAAGA
Primer R: AGCCAAATACCAGTCGTCAC
YCC HG: I1
Nucleotide alleles change (mutation): G to A
Region:     ARSDP

Name: P40
Type: SNP
Source: PS (Michael Hammer and James F. Wilson)
Position: ChrY:12994402..12994402 (+ strand)
Length: 1
ISOGG HG: I1
Primer F: GGAGAAAAGGTGAGAAACC
Primer R: GGACAAGGGGCAGATT
YCC HG: I1
Nucleotide alleles change (mutation): C to T
Region: ARSDP

See also

 European ethnic groups
 Genetic history of Europe
 Haplogroup I2 (Y-DNA)
 History of Normandy
 Human Y-chromosome DNA haplogroups
 Late Glacial Maximum
 Neolithic Europe
 Norse colonization of the Americas
 Norse Sagas

References

External links
Haplogroup I databases
 Haplogroup I1 Project at FTDNA
 Danish Demes Regional DNA Project at FTDNA
 Haplogroup I-P109 Project
 British Isles DNA Project

General Y-DNA databases
There are several public access databases featuring I-M253, including:
 http://www.eupedia.com/europe/european_y-dna_haplogroups.shtml
 http://www.semargl.me/
 http://www.ysearch.org/
 http://www.yhrd.org/
 http://www.yfull.com/tree/I1/

I-M253
Category:Nordic Stone Age
Category:Stone Age Europe