Tag: family

Another “Pre-Yamnaya” sample from the Northern Caucasus?

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I have updated the Ancient DNA Dataset, including a lot of new information from – among other sources – the latest version of Reich Lab curated Dataset, now renamed Allen Ancient DNA Resource (AADR). This includes new columns:

  1. Object-ID: I am now using whenever possible the Master-ID; Version-ID for a quick identification of the ‘best’ sample to include in SmartPCA or ADMIXTURE runs; and Index as a key with a unique reference number for each sample. That should make for enough stable references for any external tool to use the data.
  2. mtDNA: Added mtDNA coverage
… Read the rest “Another “Pre-Yamnaya” sample from the Northern Caucasus?”

Proto-Uralic Homeland (VII): Kinship & Numerals

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This post is part of a draft on palaeolinguistics and the Proto-Uralic homeland. See below for the color code of protoforms.

12. Kinship Terminology

12.1. Immediate Family

PU? (Saa.?, Fi.?, Md.?, Ma.?, Kh.?, Ms.?, Hu.?, Smy.?) *äććä?/*eć(ć)ä/*ić(ć)ä/*äjćä ‘father’ (UEW Nº 35). PSmy. was was borrowed into Yukaghir ečē ‘father’. Samoyedic form borrowed into Yukaghir ečē ‘father’ (Aikio 2014: 57)

NOTE. Pre-PSmy. *äjćä? could reflect an earlier Pre-PIIr. *eićo- or PIIr. *aića- ‘to control, to own’. An underlying Pre-PFi., Pre-PSaa. (based on PSaa. *e̮ćē from Skolt and Kildin Saami) and PMa. *ićä could reflect PIIr. … Read the rest “Proto-Uralic Homeland (VII): Kinship & Numerals”

Proto-Indo-European kinship system and patrilineality

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Within months, it will be finally confirmed that both Late Repin offshoots – Early Yamnaya and Afanasievo – spread with clans that were dominated by R1b-L23 patrilineages. Succeeding migration events, likely coupled with internal founder effects under the most successful clans, left Indo-Tocharian-speaking clans as an almost uniform community in terms of Y-chromosome haplogroups, with their most recent common ancestor traceable to the 5th millennium BC.

Before that, it seems that the Indo-Anatolian-speaking Early Khvalynsk community was slightly more diverse. In particular, the success of R1b-V1636 lineages is apparent in the Khvalynsk-Novodanilovka expansion, since it is … Read the rest “Proto-Indo-European kinship system and patrilineality”

Close inbreeding and low genetic diversity in Inner Asian human populations despite geographical exogamy

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Open access Close inbreeding and low genetic diversity in Inner Asian human populations despite geographical exogamy, by Marchi et al. Scientific Reports (2018) 8:9397.

Abstract (emphasis mine):

When closely related individuals mate, they produce inbred offspring, which often have lower fitness than outbred ones. Geographical exogamy, by favouring matings between distant individuals, is thought to be an inbreeding avoidance mechanism; however, no data has clearly tested this prediction. Here, we took advantage of the diversity of matrimonial systems in humans to explore the impact of geographical exogamy on genetic diversity and inbreeding. We collected ethno-demographic data for 1,344 individuals

… Read the rest “Close inbreeding and low genetic diversity in Inner Asian human populations despite geographical exogamy”

Quantitative analysis of population-scale family trees with millions of relatives

genealogy-demographic-data

The paper Quantitative analysis of population-scale family trees with millions of relatives, by Kaplanis, Gordon, Shor, et al. Science (2018) 359(6379), based on a study of genealogical information at Geni, is today news worldwide.

Abstract:

Family trees have vast applications in multiple fields from genetics to anthropology and economics. However, the collection of extended family trees is tedious and usually relies on resources with limited geographical scope and complex data usage restrictions. Here, we collected 86 million profiles from publicly-available online data shared by genealogy enthusiasts. After extensive cleaning and validation, we obtained population-scale family trees, including

… Read the rest “Quantitative analysis of population-scale family trees with millions of relatives”

We are all special, which also means that none of us is

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Adam Rutherford writes You’re Descended from Royalty and So Is Everybody Else – Anybody you can name from ancient history is in your family tree, which I discovered via John Hawks’ new post The surprising connectedness of human genealogies over centuries.

Excerpt:

One way to think of it is to accept that everyone of European descent should have billions of ancestors at a time in the 10th century, but there weren’t billions of people around then, so try to cram them into the number of people that actually were. The math that falls out of that apparent impasse

… Read the rest “We are all special, which also means that none of us is”