Evidence map›Paper›PMID 22346734›Full record

ArticlePLoS biology2012

Genome-wide analysis of the world's sheep breeds reveals high levels of historic mixture and strong recent selection.

James W Kijas, Johannes A Lenstra, Ben Hayes, Simon Boitard, Laercio R Porto Neto, Magali San Cristobal, Bertrand Servin, Russell McCulloch, Vicki Whan, Kimberly Gietzen and 7 more

Abstract read
In one paragraph

Article in PLoS biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 427 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
427citing papers in PubMed, 1 pooled it
–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

427 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Advances in Molecular Genetics and Breeding of Cattle, Sheep, and Goats.Animals : an open access journal from MDPI · 2026
    Article

367 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors.

James W KijasLivestock Industries, CSIRO, Brisbane, Australia. James.Kijas@csiro.au
Johannes A Lenstra
Ben Hayes
Simon Boitard
Laercio R Porto Neto
Magali San Cristobal
Bertrand Servin
Russell McCulloch
Vicki Whan
Kimberly Gietzen
Samuel Paiva
William Barendse
Elena Ciani
Herman Raadsma
John McEwan
Brian Dalrymple
International Sheep Genomics Consortium Members

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Through their domestication and subsequent selection, sheep have been adapted to thrive in a diverse range of environments. To characterise the genetic consequence of both domestication and selection, we genotyped 49,034 SNP in 2,819 animals from a diverse collection of 74 sheep breeds. We find the majority of sheep populations contain high SNP diversity and have retained an effective population size much higher than most cattle or dog breeds, suggesting domestication occurred from a broad genetic base. Extensive haplotype sharing and generally low divergence time between breeds reveal frequent genetic exchange has occurred during the development of modern breeds. A scan of the genome for selection signals revealed 31 regions containing genes for coat pigmentation, skeletal morphology, body size, growth, and reproduction. We demonstrate the strongest selection signal has occurred in response to breeding for the absence of horns. The high density map of genetic variability provides an in-depth view of the genetic history for this important livestock species.

Indexed as

Selection, GeneticAfricaAnimalsAsiaEuropeGene FrequencyGenomeModels, GeneticPhylogenyPhylogeographyPolymorphism, Single NucleotidePrincipal Component AnalysisSheep

Identifiers

PMID22346734
PMCPMC3274507

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.