Evidence map›Paper›PMID 20051990›Full record

ArticleEuropean journal of human genetics : EJHG2010

Human Y chromosome haplogroup R-V88: a paternal genetic record of early mid Holocene trans-Saharan connections and the spread of Chadic languages.

Fulvio Cruciani, Beniamino Trombetta, Daniele Sellitto, Andrea Massaia, Giovanni Destro-Bisol, Elizabeth Watson, Eliane Beraud Colomb, Jean-Michel Dugoujon, Pedro Moral, Rosaria Scozzari

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In one paragraph

Article in European journal of human genetics : EJHG, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed.

  1. Article
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  4. Review
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  9. Article
  10. Genetic history of Chad.American journal of physical anthropology · 2018
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  12. Article
  13. Review
  14. Article
  15. Article
  16. Genome-wide ancestry of 17th-century enslaved Africans from the Caribbean.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Fulvio CrucianiDipartimento di Genetica e Biologia Molecolare, Sapienza Università di Roma, Rome, Italy.
Beniamino Trombetta
Daniele Sellitto
Andrea Massaia
Giovanni Destro-Bisol
Elizabeth Watson
Eliane Beraud Colomb
Jean-Michel Dugoujon
Pedro Moral
Rosaria Scozzari

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although human Y chromosomes belonging to haplogroup R1b are quite rare in Africa, being found mainly in Asia and Europe, a group of chromosomes within the paragroup R-P25(*) are found concentrated in the central-western part of the African continent, where they can be detected at frequencies as high as 95%. Phylogenetic evidence and coalescence time estimates suggest that R-P25(*) chromosomes (or their phylogenetic ancestor) may have been carried to Africa by an Asia-to-Africa back migration in prehistoric times. Here, we describe six new mutations that define the relationships among the African R-P25(*) Y chromosomes and between these African chromosomes and earlier reported R-P25 Eurasian sub-lineages. The incorporation of these new mutations into a phylogeny of the R1b haplogroup led to the identification of a new clade (R1b1a or R-V88) encompassing all the African R-P25(*) and about half of the few European/west Asian R-P25(*) chromosomes. A worldwide phylogeographic analysis of the R1b haplogroup provided strong support to the Asia-to-Africa back-migration hypothesis. The analysis of the distribution of the R-V88 haplogroup in >1800 males from 69 African populations revealed a striking genetic contiguity between the Chadic-speaking peoples from the central Sahel and several other Afroasiatic-speaking groups from North Africa. The R-V88 coalescence time was estimated at 9.2-5.6 [corrected] kya, in the early mid Holocene. We suggest that R-V88 is a paternal genetic record of the proposed mid-Holocene migration of proto-Chadic Afroasiatic speakers through the Central Sahara into the Lake Chad Basin, and geomorphological evidence is consistent with this view.

Indexed as

Emigration and ImmigrationFathersLanguagePhylogenyAfrica, NorthernAsiaChadChromosomes, Human, YGeographyHaplotypesHumansMaleMicrosatellite RepeatsTime Factors

Identifiers

PMID20051990
PMCPMC2987365

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.