In human genetics

Human genetics

Human genetics describes the study of inheritance as it occurs in human beings. Human genetics encompasses a variety of overlapping fields including: classical genetics, cytogenetics, molecular genetics, biochemical genetics, genomics, population genetics, developmental genetics, clinical genetics,...

, Haplogroup IJK is a human Y-chromosome DNA haplogroup

Human Y-chromosome DNA haplogroups

In human genetics, a Human Y-chromosome DNA haplogroup is a haplogroup defined by differences in the non-recombining portions of DNA from the Y chromosome ....

.
Haplogroup IJK is a descendant branch of the macrohaplogroup F with haplogroup IJ

Haplogroup IJ (Y-DNA)

In human genetics, Haplogroup IJ is a human Y-chromosome DNA haplogroup.Haplogroup IJ is a descendant branch of Haplogroup IJK which in turn derives from the greater Haplogroup F. Descendants are Haplogroup I and Haplogroup J...

 and haplogroup K

Haplogroup K (Y-DNA)

In human genetics, Haplogroup K is a Human Y-chromosome DNA haplogroup. This haplogroup is a descendant of Haplogroup IJK. Its major descendant haplogroups are Haplogroup LT and Haplogroup K...

 as its attested descendants.

According to Family Tree DNA

FamilyTreeDNA

Family Tree DNA is a commercial genetic genealogy company based in Houston, Texas with its partner laboratory, Arizona Research Labs, housed at the University of Arizona. Family Tree DNA offers analysis of autosomal DNA, YDNA, and mtDNA to individuals for genealogical purposes based on DNA samples...

, the two SNP

Single nucleotide polymorphism

A single-nucleotide polymorphism is a DNA sequence variation occurring when a single nucleotide — A, T, C or G — in the genome differs between members of a biological species or paired chromosomes in an individual...

s defining this haplogroup unite I, J, and K within F as a "brother clade" to G and H. FTDNA further states that haplogroup IJK's relationship with haplogroup F1 through F4 is unknown.

Tree

This phylogenetic tree of haplogroup subclades is based on the YCC 2008 tree and subsequent published research.

• IJK
  • IJK (L15/S137, L16/S138, L69.1(=G)/S163.1)
    • IJ
      Haplogroup IJ (Y-DNA)
      In human genetics, Haplogroup IJ is a human Y-chromosome DNA haplogroup.Haplogroup IJ is a descendant branch of Haplogroup IJK which in turn derives from the greater Haplogroup F. Descendants are Haplogroup I and Haplogroup J...
      
       (M429/P125, P123, P124, P126, P127, P129, P130, S2, S22)
    • K
      Haplogroup K (Y-DNA)
      In human genetics, Haplogroup K is a Human Y-chromosome DNA haplogroup. This haplogroup is a descendant of Haplogroup IJK. Its major descendant haplogroups are Haplogroup LT and Haplogroup K...
      
       (M9, P128, P131, P132)

Some of the main branches within the group are shown below:-

L15

The defining SNP L15 is located at Y chromosomal location rs9786139 with the ancestral value being A

Adenine

Adenine is a nucleobase with a variety of roles in biochemistry including cellular respiration, in the form of both the energy-rich adenosine triphosphate and the cofactors nicotinamide adenine dinucleotide and flavin adenine dinucleotide , and protein synthesis, as a chemical component of DNA...

 and the derived value being G

Guanine

Guanine is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine . In DNA, guanine is paired with cytosine. With the formula C5H5N5O, guanine is a derivative of purine, consisting of a fused pyrimidine-imidazole ring system with...

.

L16

The defining SNP L16 is at location rs9786714 with the ancestral value being G and the derived value being A.

See also

• Haplogroup
  Haplogroup
  In the study of molecular evolution, a haplogroup is a group of similar haplotypes that share a common ancestor having the same single nucleotide polymorphism mutation in both haplotypes. Because a haplogroup consists of similar haplotypes, this is what makes it possible to predict a haplogroup...
  
  
• Human Y-chromosome DNA haplogroups
  Human Y-chromosome DNA haplogroups
  In human genetics, a Human Y-chromosome DNA haplogroup is a haplogroup defined by differences in the non-recombining portions of DNA from the Y chromosome ....
  
  
• Y-DNA haplogroups by ethnic groups
  Y-DNA haplogroups by ethnic groups
  Listed here are notable ethnic groups by Y-DNA haplogroups based on relevant studies. The data is presented in two columns for each haplogroup with the first being the sample size and the second the percentage in the haplogroup designated by the column header...
  
  
• Haplogroup IJ (Y-DNA)
  Haplogroup IJ (Y-DNA)
  In human genetics, Haplogroup IJ is a human Y-chromosome DNA haplogroup.Haplogroup IJ is a descendant branch of Haplogroup IJK which in turn derives from the greater Haplogroup F. Descendants are Haplogroup I and Haplogroup J...
  
  
• Haplogroup I (Y-DNA)
  Haplogroup I (Y-DNA)
  In human genetics, Haplogroup I is a Y-chromosome DNA haplogroup, a subgroup of haplogroup IJ, itself a derivative of Haplogroup IJK....
  
  
• Haplogroup J (Y-DNA)
  Haplogroup J (Y-DNA)
  In human genetics, Haplogroup J is a Y-chromosome DNA haplogroup. It is one of the major male lines of all living men...
  
  
• Haplogroup K (Y-DNA)
  Haplogroup K (Y-DNA)
  In human genetics, Haplogroup K is a Human Y-chromosome DNA haplogroup. This haplogroup is a descendant of Haplogroup IJK. Its major descendant haplogroups are Haplogroup LT and Haplogroup K...