Eurasia

Carriers of mitochondrial DNA macrohaplogroup R colonized Eurasia and Australasia from a southeast Asia core area

Coeval independently dispersals around 50 kya of the West Asia haplogroup U and the Wallacea haplogroup P, points to a halfway core area in southeast Asia as the most probable centre of expansion of macrohaplogroup R, what fits in the phylogeographic pattern of its ancestor, macrohaplogroup N, for which a northern route and a southeast Asian origin has been already proposed.

2017-05-27T08:22:26+00:00 May 27th, 2017|

Phylogeography of human Y-chromosome haplogroup Q3-L275 from an academic/citizen science collaboration

We analyzed 47 fully sequenced Y-chromosomes and reconstructed the haplogroup Q3 phylogenetic tree in detail. Haplogroup Q3-L275, derived from the oldest known split within Eurasian/American haplogroup Q, most likely occurred in West or Central Asia in the Upper Paleolithic period. During the Mesolithic and Neolithic epochs, Q3 remained a minor component of the West Asian Y-chromosome pool and gave rise to five branches (Q3a to Q3e), which spread across West, Central and parts of South Asia. Around 3–4 millennia ago (Bronze Age), the Q3a branch underwent a rapid expansion, splitting into seven branches, some of which entered Europe. One of these branches, Q3a1, was acquired by a population ancestral to Ashkenazi Jews and grew within this population during the 1st millennium AD, reaching up to 5% in present day Ashkenazi.

2017-02-08T12:22:10+00:00 February 8th, 2017|

Human Y Chromosome Haplogroup N: A Non-trivial Time-Resolved Phylogeography that Cuts across Language Families

The more southerly distributed sub-clade N4 emerged before N2a1 and N3, found mostly in the north, but the latter two display more elaborate branching patterns, indicative of regional contrasts in recent expansions. In particular, a number of prominent and well-defined clades with common N3a3’6 ancestry occur in regionally dissimilar northern Eurasian populations, indicating almost simultaneous regional diversification and expansion within the last 5,000 years. This patrilineal genetic affinity is decoupled from the associated higher degree of language diversity.

2016-07-13T08:43:29+00:00 July 13th, 2016|

R

Haplogroup R is a branch on the maternal tree of human kind. Its age is between 54,400 and 58,600 years (Behar et al., 2012b).

2017-10-14T15:44:23+00:00 June 6th, 2016|

U

Haplogroup U is a branch on the maternal tree of human kind. Its age is between 43,200 and 49,800 years (Behar et al., 2012b).

2017-10-14T22:22:26+00:00 June 6th, 2016|

U8

Haplogroup U8 is a branch on the maternal tree of human kind. Its age is between 39,400 and 46,700 years (Behar et al., 2012b).

2017-10-14T22:22:36+00:00 June 6th, 2016|

N

Haplogroup N is a branch on the maternal tree of human kind. Its age is between 56,500 and 61,200 years (Behar et al., 2012b).

2017-10-14T22:20:29+00:00 June 6th, 2016|

K1

Haplogroup K1 is a branch on the maternal tree of human kind. Its age is between 18,700 and 25,400 years (Behar et al., 2012b).

2017-10-14T22:22:57+00:00 June 6th, 2016|