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. 2019 Nov 8;20:556. doi: 10.1186/s12859-019-3164-z

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© The Author(s). 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Population structure of sequenced individuals. (a) Principle component analysis (PCA) of individuals. Different symbols and colors indicated the different pigs by breed. PC1: first principal component; PC2: second principal component. (b) Heatmap of all 9 sequenced individuals using the molecular relationship matrix. The exact genomic relationship between two individuals is shown in each small lattice