Blog Profile / Dienekes' Anthropology Blog

Filed Under:Academics / Anthropology
Posts on Regator:1634
Posts / Week:3.8
Archived Since:March 13, 2008

Blog Post Archive

Archaic introgression in Pygmies

We must remember that detecting archaic admixture in Africa is a statistical power game where only a particular type of such introgression can be detected:First, it needs to be from highly diverged Palaeoafrican sources so that it will look very different from plain H. Show More Summary

Ancestors of Eastern Neandertals admixed with modern humans 100 thousand years ago

If true, this is very hard to reconcile with late (60kya) out of Africa and may be a smoking gun for pre-100kya presence of anatomically modern humans in Eurasia. From the paper:The inferred demographic model confirms and provides quantitative estimates of previously inferred gene flow events among modern and archaic humans2, 3 (Extended Data Fig. Show More Summary

Phenotypic effects of Neandertal admixture

Now that we know that Neandertal-introgressed DNA had (deleterious) functional consequences for modern humans, I think we also need a study on "useful stuff" conferred by Neandertal admixture. So far, the Neandertal genome has been used...Show More Summary

mtDNA from 55 hunter-gatherers across 35,000 years in Europe

The fact that UP Europeans had mtDNA haplogroup M really destroys any lingering justification for a coastal migration that first brought (M, N) to Asia and then a subset (N) into Europe.Another justification for the "Asia-first" model was the presence of Y-haplogroup C in Australians and Asians. Show More Summary

Admixture within and into Africa

bioRxiv, Admixture into and within sub-Saharan AfricaGeorge Busby, Gavin Band, Quang Si Le, Muminatou Jallow, Edith Bougama, Valentina Mangano, Lucas Amenga-Etego, Anthony Emil, Tobias Apinjoh, Carolyne...Show More Summary

History of extant populations of India

The five components they speak of are ANI, ASI, AAA (Ancestral Austro-Asiatic), ATB (Ancestral Tibeto-Burman), and a distinct fifth ancestry in the Andaman archipelago.The differentiation of the four main components seems clear enough on the figure (left). Show More Summary

Humans in the central Siberian Arctic ~45,000 years ago

The lack of such northerly sites prior to 45,000 years ago makes it quite likely that this mammoth kill was made by modern humans (it would be quite a coincidence if it was made by Neandertals at the same time as the expansionary Homo sapiens make their appearance all over the rest of Eurasia). Show More Summary

Helicobacter pylori in the Iceman

Science 8 January 2016:Vol. 351 no. 6269 pp. 162-165 The 5300-year-old Helicobacter pylori genome of the Iceman Frank Maixner1,,†, Ben Krause-Kyora2,†, Dmitrij Turaev3,†, Alexander Herbig4,5, et al. The stomach bacterium Helicobacter pylori is one of the most prevalent human pathogens. Show More Summary

Even more Anatolian Neolithic genomes

Recently I proclaimed the problem of "Neolithization of Europe" to be "done", but it doesn't hurt to have more confirmation as this new paper does. The Anatolian data is from a different site than those used by Mathieson et al. and Hofmanová, Kreutzer et al. Show More Summary

Happy New Year 2016

Last year I wished for ancient African DNA and I got my wish.This year I wish for some ancient East Asian DNA. It's quite an embarrassment that hundreds of ancient European genomes have been published, but only a single Chromosome 21 from East Asia.

Bronze Age people from Ireland had steppe ancestry and R1b

From the paper:We were able to deduce that Neolithic Ballynahatty had a dark hair shade (99.5% probability), most likely black (86.1% probability), and brown eyes (97.3% probability) (46). Bronze Age Rathlin1 probably had a light hair shade (61.4%) and brown eyes (64.3%). Show More Summary

Refining Y-chromosome phylogeny with South African sequences

bioRxiv Refining the Y chromosome phylogeny with southern African sequences Chiara Barbieri, Alexander Hübner, Enrico Macholdt, Shengyu Ni, Sebastian Lippold, Roland Schröder, Sununguko Wata Mpoloka,Show More Summary

Archaic femur from Maludong, China

PLoS ONE 10(12): e0143332. doi:10.1371/journal.pone.0143332 A Hominin Femur with Archaic Affinities from the Late Pleistocene of Southwest China Darren Curnoe et al. The number of Late Pleistocene hominin species and the timing of their...Show More Summary

Neolithic farmers from Greece and Anatolia

A couple of new papers appeared this week. First, an article in Nature on natural selection in ancient Europe includes a sample of Anatolian Neolithic farmers and concludes that the European Neolithic farmers were descended from them with a bit of extra European hunter-gatherer admixture. Show More Summary

Two more Denisovans (Sawyer, Renaud et al. 2015)

PNAS doi: 10.1073/pnas.1519905112 Nuclear and mitochondrial DNA sequences from two Denisovan individuals Susanna Sawyer, Gabriel Renaud et al. Denisovans, a sister group of Neandertals, have been described on the basis of a nuclear genome sequence from a finger phalanx (Denisova 3) found in Denisova Cave in the Altai Mountains. Show More Summary

West_Asian in the flesh (hunter-gatherers from Georgia) (Jones et al. 2015)

Years ago, I detected the presence of a West_Asian genetic component (with dual modes in "Caucasus" and "Gedrosia") whose origins I placed in the "highlands of West Asia" and which I proposed spread into Europe post-5kya with Indo-European languages.Earlier this year, the study by Haak et al. Show More Summary

Genetic structure of 1,272 Italians

From the paper:The distribution of the pairwise Fst distances between all population pairs is shown in Supplementary Table S3. The genetic distance between Southern and Northern Italians (Fst=0.0013) is comparable to that between individuals...Show More Summary

Selection against Neandertal deleterious alleles

Sampled Neandertals (from Europe, the Caucasus, and Siberia) certainly had lower effective population size than living humans, but I wonder what the comparison would be between ancient tribes of modern humans and Neandertals in the Near...Show More Summary

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