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. 2017 Dec 7;7:17140. doi: 10.1038/s41598-017-17127-1

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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B. taurus introgression as a source for Q in B. indicus. (a) Ancestry analysis showing that both birth weight dEBVs and occurrence of Q were positively associated with percentage of B. taurus ancestry on chromosome 14. (b) A principal components analysis revealed two breeding subgroups of Nellore cattle differing in B. taurus ancestry, frequency of Q, incidence of polledness (presumably also resulting from B. taurus introgression) and mean of birth weight dEBV. (c) Next-generation sequencing data of 24 Nellore bulls confirming a B. taurus origin of Q in B. indicus. Each row represents a bull, and colored vertical bars represent genotypes at different variant sites.