Their recent research showed the mitochondrial DNA of 30 Jomon bodies was close to that of the Buryat population of southern Siberia, while DNA of only three bodies was close to that of the Korean, Chinese and Taiwanese populations. (dakarctu.com)
Genetic4
Genetic studies support the endosymbiotic theory according to which mitochondria and related organelles developed from members of this group. (wikipedia.org)
Genetic drift is enhanced in Rickettsiales genomes due to low population sizes (given their endosymbiotic nature) and frequent population bottlenecks. (wikipedia.org)
Scientists have determined that the Jomon (and Ryukyuan and Ainu) people carry a genetic marker called the ab3st haplotype or blood marker that is shared by Mongoloid populations, found today among the Korean, Tibetan, Tungus, Eskimo and Yakut peoples, and that marker is commonest among the Buryat people living around Lake Baikal. (dakarctu.com)
A recent study has confirmed that Nordic Corded Ware (CW) groups (Battle Axe Culture), which appeared at this time exhibit genetic ancestry from European CW groups that migrated into Scandinavia but also exhibit admixture from farmers, such as the TRB (Egfjord et al. (springer.com)
Investigate1
In this paper, we investigate population dynamics in the Scandinavian Neolithic and Early Bronze Age in southwestern Sweden. (springer.com)
North1
The first Mongoloid group is thought to have made their way through a corridor North of the Tibetan massif while the second Mongoloid group took the corridor South of the Himalayas heading in southerly direction into Kyushu or southeast Asia, then into Ryukyu islands. (dakarctu.com)
Culture1
Some of the drivers behind these changes were agriculture introduced by Funnelbeaker/Trichterbecher Culture (TRB) groups ca 4000 cal BC and growing long-distance exchange networks and imports of metal objects in the Late Neolithic (2200-1700 cal BC). (springer.com)
Common ancestor2
Mitochondria share a common ancestor with the Alphaproteobacteria , but determining their precise origins is challenging due to inherent difficulties in phylogenetically reconstructing ancient evolutionary events. (nature.com)
Despite of the differences in evolutionary history and lifestyle, there is phylogenomic evidence for a shared common ancestor between SAR11 organisms and the Rickettsiales and for rooting of the mitochondria in this group 6 , but the latter is still a matter of debate 22 . (nature.com)
Genome2
The rooting of the ancestral mitochondria within the Alphaproteobacteria has not yet been resolved, but better phylogenetic methodology and new mitochondrial and bacterial genome sequences offer opportunities to refine understanding of this singular evolutionary event. (nature.com)
Instead, our analyses suggest the Saqqaq genome harbors Northern Native American ancestry. (bvsalud.org)
Rickettsiales3
However, later studies suggested that this relationship is false and was due to a phylogenetic artefact, which artificially groups independent AT-rich and fast-evolving lineages (Rickettsiales and Pelagibacterales have both properties) together. (wikipedia.org)
In their classification, the relation between the two orders is retained in the subclass, the Rickettsidae, which include the Rickettsiales, the Pelagibacteriales, and the extinct protomitochondrion (mitochondria themselves are not bacteria, but organelles). (wikipedia.org)
Genetic drift is enhanced in Rickettsiales genomes due to low population sizes (given their endosymbiotic nature) and frequent population bottlenecks. (wikipedia.org)
Similarly1
Our correlation matrix input method identifies groups of genes that are similarly co-expressed in multiple tissues (a community that spans multiple layers, which we call a generalist community) and some groups of genes that are co-expressed in just one tissue (a community that lies primarily within just one layer, which we call a specialist community). (bvsalud.org)
Data2
The simplest explanation of these data is that mitochondria evolved from a planktonic marine alphaproteobacterial lineage that participated in multiple inter-specific cell colonization events, in some cases yielding parasitic relationships, but in at least one case producing a symbiosis that characterizes modern eukaryotic life. (nature.com)
With so much data on hand, and often for those groups of species that are less well studied (such as insects) and for which monitoring scheme data is unavailable, it is important that these data are put to good use. (ucl.ac.uk)
Evidence3
We find no evidence of relaxed selection on chemosensory genes in agricultural populations. (bvsalud.org)
Many specifics of the population histories of the Indigenous peoples of North America remain contentious owing to a dearth of physical evidence. (bvsalud.org)
We find no evidence of Paleo-Inuit (represented by Saqqaq) ancestry in present-day or ancient Pacific Northwest peoples. (bvsalud.org)