Haplogroup Q-L54 is a subclade of Y-DNA haplogroup Q-L53. Q1a3a-L54 is defined by the presence of the L54 Single Nucleotide Polymorphism (SNP).
Q-L54 has descendants across Western and Central Europe, the North and East of Asia, and the Americas. It includes two of the major pre-Columbian paternal lineages in the Americas: Q-M3 and Q-Z780. The boy Anzick-1, who lived 12,600 years ago and was found in the state of Montana, has a Y-chromosome that refers to haplogroup Q-M971 (Q-L54*(xM3)). Q-L54 descendant lines also include two Eurasian paternal lineages, the Central Asian Q-L330 lineage and the Scandinavian Q-L804. Q-L330 is also found in some men with Romaniote Jewish paternal lines from Greece, as well as Turks of Western Thrace. Q-L804 is Scandinavian and the TMRCA is just over 3000 years. Haplogroup QâÂÂL54 is dominant in two North Siberian populations, the Kets and Selkups, with frequencies of 97.7% and 66.7%, respectively. Baraba Tatars have ~ 50% haplogroup Q.
Q-L54 is currently defined by the L54 SNP alone.
Current status of the polygenetic tree for Q-L54 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-L54.
The 2013 version of the polygenetic tree for haplogroup Q-L54 made by Thomas Krahn at the Genomic Research Center: Proposed Tree.