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. 2022 Feb 17;20:44. doi: 10.1186/s12915-022-01243-0

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. 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 in a credit line to the data.

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Fig. 4 — Convergent gene losses in species pairs from similar and distinct environments. A Venn diagram showing the one-to-one orthologous genes (large box) and overlapping pseudogenes in NMRs-BMRs pair. The numbers in parentheses represent the percentages of each category in the total number of pseudogenes in NMRs and BMRs (286 in total). P-value from a hypergeometric test indicates that gene losses in NMRs and BMRs are not independent from each other. B Proportional difference of overlapping pseudogenes among 4 species pairs including NMRs-BMRs, guinea pigs-rats, NMRs-rats, and BMRs-guinea pigs. The numbers of overlapping and total pseudogene from each pair are labelled above the bars. P-values are from two-tailed Fisher’s exact test