Q-L804 | |
Origin-Date: | 3,000-15,000 years ago |
Origin-Place: | Beringia Either East Asia or North Asia |
Ancestor: | Q-L54 |
Descendants: | Q-Y9052, Q-A13540, Q-JN15, Q-Y16137, Q-Y7582 |
Mutations: | L804 (rs1952836) |
Haplogroup Q-L804 (Y-DNA) is a Y-chromosome DNA haplogroup. Haplogroup Q-L804 is a subclade of Haplogroup Q-L54. Currently Q-L804 is Q1b1a1b below Q1b-M346.[1]
In 2000 the research group at Oxford University headed by Dr. Agnar Helgason first discovered the haplotype that was much later to become known as Q-L804. In 2000 the strange haplotype was called “branch-A” (i.e. R1b-branch A) and it was found uniquely on Iceland and Scandinavia.[2] Later studies completed the genetic bridge by determining that Q-L804 is related to Q-M242 populations of Native Americans, Turkmen (Q-M3) and Siberian populations of the Selkup and Ket people (Q-L54*xM3).[3] [4]
The origin of Haplogroup Q-L804 is uncertain. However it is likely to have originated in Beringia (North East Siberia) c. 15000 to 17000 yBP since it is closely linked to Q-M3 and to other haplogroups linked to the indigenous peoples of the Americas (over 90% of indigenous people in Meso & South America). Today, Q-L804 is found mainly in Norway and Sweden and in regions of North West Europe of Viking Age Expansion (British Isles, Atlantic Isles, Northern Germany, Normandy and Poland). The Q-L804 is also found among descendants of Scandinavian immigrants to North America. Haplogroup Q-L804 is defined by the presence of the (L804) single-nucleotide polymorphism (SNP). Q-L804 occurred on the Q-L54 lineage roughly 10-15 thousand years ago as the migration into the Americas was underway. It is likely that the split between Q-M3 and Q-L804 happened in the ancestors of the indigenous peoples of the Americas.
Populations carrying Q-L804 are extremely thinly distributed throughout Northern Europe and among recent North European immigrants to North America. Since the discovery and definition of Q-L804 in 2014, three main subclades of Q-L804 bearing populations have been discovered in North Europe. The Q-Y9052 , the Q-JN14 and Q-Y7582. Of these three branches Q-JN14 has the widest distribution, ranging from Poland to Iceland, British Isles and France. Q-L804 is one of two subclades known as Q Nordic among genealogical communities. The Q-L527 is the other subclad of the Q Nordic.
Q-Y9052 (BY459). This lineage is found in Sweden, Norway and Germany.
Q-JN14 It has been found in Norway, Iceland, British Isles, Germany, France and Poland.
Q-Y7582 (BY386). This lineage has been found in Scotland, Iceland and England.
The L804 was discovered and defined by Thomas Krahn of Family Tree DNA's Genomics Research Center in 2012.[5] The technical details of L804 are:
Nucleotide change: T to A
Position (base pair):
Total size (base pairs):
Forward 5′→ 3′:
Reverse 5′→ 3′:
Position: https://ybrowse.org/gb2/gbrowse/chrY/?name=chrY%3A11907522..11907522 chrY:11,907,522
dbSNP151: rs765685783
Q-L804 is defined by the SNPs L804 and L805 and E324.
Current status of the polygenetic tree for Q-L804 is published by Pinotti et al. in the article Y Chromosome Sequences Reveal a Short Beringian Standstill, Rapid Expansion, and early Population structure of Native American Founders. Calibrated phylogeny of Y haplogroup Q-L804 and its relation to the other branches of Q-L54.[6]
Yfull.com's phylogenetic tree ver. 6.08.01 for https://yfull.com/tree/Q-L804/ for haplogroup Q-L804. Yfull's tree also include estimation of the age of the branches, and TMRCA (Time to Most Recent Common Ancestor)
Family Tree DNA Y-DNA haplotree for haplogroup Q-L804 https://www.familytreedna.com/public/y-dna-haplotree/Q
The subtree Q-BY387 is found on Iceland, Scotland and England. The Q-JN14 is widely distributed in North-west Europe, but most kits are from Norway. The subtree Q-BY459 is by FT DNA mainly found in Sweden and Norway.