ArticleThe Journal of heredity
A Genomic Approach for Distinguishing between Recent and Ancient Admixture as Applied to Cattle.
Article in The Journal of heredity. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 22 citations in OpenAlex.
- Genome-wide association analysis revealed novel candidate genes for body measurement traits in indigenous Gudali and crossbred Simgud in Cameroon.BMC genomics · 2025Article
- Genomic diversity of Cameroonian Gudali and Gudali-cross cattle.Scientific reports · 2025Article
- Genome-wide local ancestry and the functional consequences of admixture in African and European cattle populations.Heredity · 2025Article
- Global and Local Ancestry and its Importance: A Review.Current genomics · 2024Review
- Genetic architecture of a composite beef cattle population.Journal of animal science · 2022Article
- Genome-wide local ancestry and evidence for mitonuclear coadaptation in African hybrid cattle populations.iScience · 2022Article
- Candidate-species delimitation inEcology and evolution · 2022Article
- Dynamics of genomic architecture during composite breed development in cattle.Animal genetics · 2020Article
- The breakdown of genomic ancestry blocks in hybrid lineages given a finite number of recombination sites.Evolution; international journal of organic evolution · 2018Article
- Genetic Diversity, Population Structure and Ancestral Origin of Australian Wheat.Frontiers in plant science · 2017Article
- Compression distance can discriminate animals by genetic profile, build relationship matrices and estimate breeding values.Genetics, selection, evolution : GSE · 2015Article
- How do SNP ascertainment schemes and population demographics affect inferences about population history?BMC genomics · 2015Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Genomic data facilitate opportunities to track complex population histories of divergence and gene flow. We developed a metric, scaled block size (SBS), which uses the nonrecombined block size of introgressed regions of chromosomes to differentiate between recent and ancient types of admixture, and applied it to the reconstruction of admixture in cattle. Cattle are descendants of 2 independently domesticated lineages, taurine and indicine, which diverged more than 200 000 years ago. Several breeds have hybrid ancestry between these divergent lineages. Using 47 506 single-nucleotide polymorphisms, we analyzed the genomic architecture of the ancestry of 1369 individuals. We focused on 4 groups with admixed ancestry, including 2 anciently admixed African breeds (n = 58; n = 43), New World cattle of Spanish origin (n = 51), and known recent hybrids (n = 46). We estimated the ancestry of chromosomal regions for each individual and used the SBS metric to differentiate the timing of admixture among groups and among individuals within groups. By comparing SBS values of test individuals with standards with known recent hybrid ancestry, we were able to differentiate individuals of recent hybrid origin from other admixed cattle. We also estimated ancestry at the chromosomal scale. The X chromosome exhibits reduced indicine ancestry in recent hybrid, New World, and western African cattle, with virtually no evidence of indicine ancestry in New World cattle.
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