http://www.biorxiv.org/content/early/2017/07/17/164400
Genomics of Mesolithic Scandinavia reveal colonization routes and high-latitude adaptation
Steigen
Steigen belonged to I2a1b-M423 and displayed derived alleles at 14 sites leading to this
haplogroup (Table S5.2). As this individual was ancestral for L161 and L621 downstream of
I2a1b we conclude that he does not belong further down in this lineage. Ancestral states at 13
29
additional sites within the I2 phylogeny exclude the lineages I2a2 and I2c to further corroborate
the I2a1b haplogroup call.
Pogledajte prilog 448540
Haplogroup I
Three Mesolithic males in this study belong either to haplogroup I2 (Hum2 and SBj) or I2a1b
Steigen). Unfortunately, there was not enough Y-chromosomal data from the SF11 male to define
his haplogroup. Haplogroup I is one of the most frequently occurring lineages in pre-Neolithic
samples from Europe from which both Y-chromosomal and genome-wide data have been
generated. The earliest hg I individual has been found in a Gravettian context in the Paglicci cave
in Italy and is dated to 34,580-31,210 BP (118). This date is slightly older than a previous
estimate of the age of the haplogroup (ca 20,000-25,000 years) (119), but more in line with
newer estimates (ca 21,390-36,863 years) (120). Haplogroups I and I2 have also been found in
individuals dated to 16,000-12,830 BP from Magdalenian (Burkhardtshohle and HohleFels49),
Azilian (Bichon) and Epipaleolithic (Rochedane) contexts in Germany, Switzerland and France
respectively (118, 121). In line with our results, five other Mesolithic males from Sweden
(Motala2, Motala3, Motala6, Motala9 and Motala12), belong to I2 lineages (I2a1, I2a1b and I2c)
(81, 82, 118, 122). Three additional Mesolithic individuals from France (BerryAuBac and
Chaudardes1) and Luxembourg (Loschbour) belong to I and I2a1b respectively (81, 118). Other,
less prevalent, lineages found in pre-Neolithic European samples are C, F, J and