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Haplogroup K (mtDNA): Wikis

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From Wikipedia, the free encyclopedia

Haplogroup K
Time of origin 22,700 to 40,400 YBP[1]
Place of origin Western Asia
Ancestor U8b'K
Descendants K1, K2
Defining mutations 3480 10550 11299 14798 16224 16311[2]

In human mitochondrial genetics, Haplogroup K is a human mitochondrial DNA (mtDNA) haplogroup.

Contents

Origin

It is the most common subclade of haplogroup U8[3] and it has an estimated age in Europe of c. 12,000 years BP[4].

Distribution

Haplogroup K represents a sizeable fraction of the Western Eurasian genetic pool. In Europe, it is particularly common around the Alps and the British Isles. It is found in lesser frequency in North Africa, the Middle East and South Asia. Approximately 32% of the haplotypes of modern people with Ashkenazi Jewish ancestry are in haplogroup K. This high percentage points to a genetic bottleneck occurring some 100 generations ago and likely due to low admixture with non-Jewish populations.[5]

Other Non-Jewish populations with large representation of Haplogroup K are the Druze of Syria, Lebanon, Israel, and Jordan, of which 16% belong to haplogroup K. In the British Isles over 10% of the population belongs to K. It was also found that a significant group of Palestinian Arabs belonged to K[6]. The general European population has about of 6% of its members in Haplogroup K[7]. Though, with such a large population to draw from (more than 400 million), a mere 6% of Europeans in K far outstrips the number of Ashkenazi Jews represented in K by a factor greater than 10 to 1.

Subclades

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Tree

This phylogenetic tree of haplogroup K subclades is based on the paper by Mannis van Oven and Manfred Kayser Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation[2] and subsequent published research.

Popular culture

In his popular book The Seven Daughters of Eve, Bryan Sykes named the originator of this mtDNA haplogroup Katrine. Analysis of the mtDNA of Ötzi the Iceman, the frozen mummy from 3300 BC found on the Austrian-Italian border, has shown that Ötzi belongs to the K1 subclade but that it cannot be categorized into any of the three modern branches of that subclade (K1a, K1b or K1c). The new subclade has preliminarly been named K1ö for Ötzi.[8]

On an 18 November 2005 broadcast of the Today Show, during an interview with Dr. Spencer Wells of The National Geographic Genographic Project, host Katie Couric was revealed to belong to haplogroup K. [2]

On 14 August 2007, Stephen Colbert was told by Dr Spencer Wells that he is a member of this haplogroup during a segment on The Colbert Report.

See also

Human mitochondrial DNA (mtDNA) haplogroups

  Mitochondrial Eve (L)    
L0 L1 L2 L3   L4 L5 L6
  M N  
CZ D E G Q   A S   R   I W X Y
C Z B F R0   pre-JT P  U
HV JT K
H V J T Former Clusters IWX

References

  1. ^ Correcting for Purifying Selection: An Improved Human Mitochondrial Molecular Clock. 2009. doi:10.1016/j.ajhg.2009.05.001. http://www.cell.com/AJHG/abstract/S0002-9297(09)00163-3.  
  2. ^ a b van Oven, Mannis; Manfred Kayser (13 Oct 2008). "Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation". Human Mutation 30 (2): E386-E394. PMID 18853457 doi:10.1002/humu.20921. http://www3.interscience.wiley.com/journal/121449735/abstract?CRETRY=1&SRETRY=0. Retrieved 2009-05-20.  
  3. ^ A. González et al. The mitochondrial lineage U8a reveals a Paleolithic settlement in the Basque country. BMC Genomics, 2006
  4. ^ Richards et al., Tracing European Founder Lineages in the Near Eastern mtDNA Pool. AJHG, 2000.
  5. ^ Doron M. Behar et al. "MtDNA evidence for a genetic bottleneck in the early history of the Ashkenazi Jewish population."
  6. ^ Doron M. Behar et al. "MtDNA evidence for a genetic bottleneck in the early history of the Ashkenazi Jewish population."
  7. ^ Doron M. Behar et al. "MtDNA evidence for a genetic bottleneck in the early history of the Ashkenazi Jewish population."
  8. ^ Luca Ermini et al. (30 October 2008), "Complete Mitochondrial Genome Sequence of the Tyrolean Iceman", Current Biology.[1]

External links


Genealogy

Up to date as of February 01, 2010

From Familypedia

Haplogroup K
Time of origin 50000 years before present
Place of origin Western Asia
Ancestral haplogroup U
Defining mutations 73, 7028, 11719, 12308, 14766, 16224, 16311

Haplogroup K is a group of people who descend from a woman in the Haplogroup R branch of the genographic tree. Because of the genetic diversity in haplogroup K she most likely lived around 50,000 years ago. Her descendants gave birth to several different subgroups, some of which exhibit very specific geographic homelands. The old age has led to a wide distribution of the descendant subgroups that harbor specific European, northern African, Indian, Arab, northern Caucasus Mountains and the Near East. While some members of the group headed north to Scandinavia or South to North Africa, most women in this group crossed the Caucasus Mountains in southern Russia and moved on t the steppes of the Black Sea. The Haplogroup K is currently shared by over 3,000,000 people[1]

Approximately 32% of the haplotypes of modern people with Ashkenazi Jewish ancestry are in haplogroup K.

In his popular book The Seven Daughters of Eve, Bryan Sykes named the originator of this mtDNA haplogroup Katrine.

Contents

Famous members

Analysis of the mtDNA of Ötzi the Iceman, the frozen mummy from 3300 BC found on the Austrian-Italian border, has shown that Ötzi belongs to the K1 subcluster of the mitochondrial haplogroup K, but that it cannot be categorized into any of the three modern branches of that subcluster.

On an 18 November 2005 broadcast of the Today Show, during an interview with Dr. Spencer Wells of The National Geographic Genographic Project, host Katie Couric was revealed to belong to haplogroup K. [1]

On 14 August 2007, Stephen Colbert was told by Dr. Spencer Wells that he is a member of this haplogroup.

References

  1. ^ The Genographic Project at National Geographic

See also

External links

Human mitochondrial DNA (mtDNA) haplogroups

  most recent common mt-ancestor    
L0   L1  
L2 L3   L4 L5 L6 L7
  M N  
CZ D E G Q   A I O   R   S W X Y
C Z B F pre-HV   pre-JT P  UK
HV JT U K
H V J T
This page uses content from the English language Wikipedia. The original content was at Haplogroup K (mtDNA). The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.
Facts about Haplogroup K (mtDNA)RDF feed

This article uses material from the "Haplogroup K (mtDNA)" article on the Genealogy wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.

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