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. 2019 Nov 11;7:e8009. doi: 10.7717/peerj.8009

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© 2019 Lin et al.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

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(A–F) Three kinds of simulated three-way crossbreeding systems among Duroc, Landrace and Yorkshire pigs. (G) The distribution of SNP number of simulated offspring of three kinds of three-way crossbreeding for 20 equal intervals (based on PHS, from 0% to 100%, with intervals of 5%). Pearson’s r was inferred between each two kinds of three-way crossbreeding systems. (H) Principal component analysis (PCA) of the three pig breeds using ~12.56M population-scale SNPs. (I) Validation of PHS. Percentages of heterozygous SNPs of each pig for 20 equal intervals (based on PHS of simulated DLY offspring, from 0% to 100%, with intervals of 5%) were calculated. Pearson’s r was inferred for each comparison between simulated DLY offspring (red line) and sequenced pig individual. (A–C) Source credit: Li et al. (2017), licensed under CC BY-NC 4.0.