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. 2019 Apr 1;20:256. doi: 10.1186/s12864-019-5633-1

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© The Author(s). 2019

Open AccessThis 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. 4 — Chromosomal localization and gene duplication events of maize JHDM genes. a Distribution of ZmJMJ genes in maize chromosomes. Nineteen ZmJMJ genes were mapped on the nine maize chromosomes. The chromosome numbers are indicated at the top of each vertical gray bar. The gene names on the left side of each chromosome correspond to the approximate locations of each ZmJMJ genes. Both segmentally duplicated paralogs and tandemly duplicated homologs are connected and marked by dashed arrows. The scale on the left is in megabases. b Duplicated blocks in maize chromosomes. The circular image retrieved from PLAZA database show inter-chromosome homologous regions connected by bands in different colors. The chromosome numbers and ZmJMJ genes are indicated outside