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. 2019 Jun 17;9:49. doi: 10.1186/s13578-019-0313-z

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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. 7 — Early meiotic events with three meiosis-related EDPs in autopolyploid. Meiosis is preceded by DNA replication. Meiotic chromosomes start to condense and search for homologue during leptotene. Chromosome synapsis as synaptonemal complex (SC) during pachytene. The SC forms between pairs of homologous chromosomes (red box) in diploids. Crossovers are formed when SC disassemble at diplotene. Bivalents are visualized at diakinesis when chromosomes recondense. But SC can form between more than two homologues (red box) because of three down-regulated proteins, result in univalent and multivalent in autotetraploids