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. 2020 Sep 25;11:543294. doi: 10.3389/fgene.2020.543294

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Copyright © 2020 Zhang, Nie, Li, Ning, Chen, Jia, Han, Wang, Lv, Yang and Qu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Chicken breeds with distinct phenotypes and geographical information (Photos came from poultry genetic resources in china). (B) Principal component analysis revealing genetic differentiation of 15 populations using SNP data. Breeds which are labeled, their names are mentioned in the main text; The Commercial breeds are denoted by triangle symbols, The Chinese indigenous breeds are displayed as dots, RJFs are displayed as plus sign, Europe local breed is denoted by squares, and the rest populations are marked as asterisks; PCA was performed on the whole population, plotting the first and the second dimension revealed PCA of 15 populations. (C) The admixture plot for breeds analyzed based on different number of assumed ancestors (K). (D) Neighbor-joining tree constructed using PHYLIP.