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Inheritance patterns of the transcriptome in hybrid chickens and their parents revealed by expression analysis
Stockholm University, Faculty of Science, Department of Zoology.
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Number of Authors: 102019 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, article id 5750Article in journal (Refereed) Published
Abstract [en]

Although many phenotypic traits of chickens have been well documented, the genetic patterns of gene expression levels in chickens remain to be determined. In the present study, we crossed two chicken breeds, White Leghorn (WL) and Cornish (Cor), which have been selected for egg and meat production, respectively, for a few hundred years. We evaluated transcriptome abundance in the brain, muscle, and liver from the day-old progenies of pure-bred WL and Cor, and the hybrids of these two breeds, by RNA-Seq in order to determine the inheritance patterns of gene expression. Comparison among expression levels in the different groups revealed that most of the genes showed conserved expression patterns in all three examined tissues and that brain had the highest number of conserved genes, which indicates that conserved genes are predominantly important compared to others. On the basis of allelic expression analysis, in addition to the conserved genes, we identified the extensive presence of additive, dominant (Cor dominant and WL dominant), over-dominant, and under-dominant genes in all three tissues in hybrids. Our study is the first to provide an overview of inheritance patterns of the transcriptome in layers and broilers, and we also provide insights into the genetics of chickens at the gene expression level.

Place, publisher, year, edition, pages
2019. Vol. 9, article id 5750
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Biological Sciences
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URN: urn:nbn:se:su:diva-168616DOI: 10.1038/s41598-019-42019-xISI: 000463695800003PubMedID: 30962479OAI: oai:DiVA.org:su-168616DiVA, id: diva2:1314933
Available from: 2019-05-10 Created: 2019-05-10 Last updated: 2019-05-10Bibliographically approved

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