Haplogroup IJ

Source: Wikipedia, the free encyclopedia.
Haplogroup IJ
Possible time of origin49,700–44,600 years
I, J
Defining mutationsM429/P125, P123, P124, P126, P127, P129, P130, S2, S22

Haplogroup IJ (M429/P125) is a

Haplogroup IJK (formerly known as Haplogroup F-L15).[2] IJK is a branch of Haplogroup HIJK
.

The immediate descendants of IJ are

K
(which includes most of the world's male population).

Haplogroup IJ derived populations account for a significant proportion of the pre-modern populations of

The Americas and Australasia
.

Haplogroup I appears to have arisen in Europe, so far being found in Palaeolithic sites throughout Europe (Fu 2016), but not outside it. It diverged from common ancestor IJ* about 43,000 years B.P. (Karafet 2008). Early evidence for haplogroup J has been found in the Caucasus and Iran (Jones 2015, Fu 2016). In addition, living examples of the precursor Haplogroup IJ* have been found only in ethnicities living in modern day Iran. This may indicate that IJ originated in West Asia.

Origin

A 2008 estimate suggested that the most recent common ancestor of haplogroup IJ could have lived 30,500–46,200 years ago,[3] while another estimate suggests 43,000–45,700 years.[1]

Both of the primary branches of haplogroup IJ –

Southwest Asia. This tends to suggest that Haplogroup IJ branched from IJK in West Asia, Caucasus and/or the Middle East
.

Examples of the basal/paragroup Haplogroup IJ* (M429) were first reported in a 2012 study of genetic diversity in

haplogroup I and haplogroup J respectively. However, because the researchers filtered for relatively few SNPs, these individuals may have carried less well-known SNPs equivalent to M170 and M304.[4][5]
Given the limited scope of the testing – and the small number of haplogroup IJ samples that were discovered – few firm conclusions have yet been drawn.

An inference may also be made that both IJ (M429) and its sole sibling, Haplogroup K (M9) diverged from the parent Haplogroup IJK closer to the Caucasus and the Middle East than to East Asia, due to the evolutionary distance of IJK from its direct ancestor, haplogroup HIJK.[citation needed]

IJ split in a typically disjunctive, almost mutually-exclusive geographical pattern, with J-M304 far more common in the Caucasus, and I-M170 far more common in Europe; the age of IJ and its subclades suggest that IJ probably entered Europe through the

last glacial maximum (about 26,500 years BP). The same geographic corridor (the Balkans) also supported later gene flows, including the Early Neolithic Farmers
from Anatolia about 9,000 years BP.

Phylogeny and distribution

IJ (M429, P123, P124, P125, P126, P127, P129, P130, S2, S22, per ISOGG 2008)

References

  1. ^ a b IJ, YFull.com, 2019, "IJ Y Tree" (3 November 2019).
  2. ^ ISOGG Y-tree showing HG 'IJK'
  3. PMID 18385274
    .
  4. ^ unreliable source
  5. ^ PLOS ONE: Ancient Migratory Events in the Middle East: New Clues from the Y-Chromosome Variation of Modern Iranians
  6. PMID 22815981
    .
  7. ^ ISOGG 2013 Y-DNA Haplogroup I

See also

Retrieved from "https://en.wikipedia.org/w/index.php?title=Haplogroup_IJ&oldid=1224297717"