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. 2019 Jan 16;19:25. doi: 10.1186/s12862-018-1322-y

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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. 2 — Expected inheritance of a meiotic chain of fifteen chromosomes considering parental, F₁ and backcross individuals. F₁ female mice are expected to produce gametes containing either chain chromosomes from their CHBU parent (white), or chain chromosomes from their CHHN parent (black). The fusion of these oocytes with sperm from CHHN males (black) should lead to backcross offspring (BC) with the hybrid karyotype (2n = 23) or the CHHN karyotype (2n = 24). Chromosomes not involved in the chain need not segregate according to race of origin