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. 2021 Nov 29;7(12):1571–1578. doi: 10.1038/s41477-021-01031-8

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© The Author(s) 2021

Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 2 — a, Genome assembly contiguity (N50) by assembly size for the 268 species with ploidy infromation. Contiguity is not associated with differences in genome size. The ploidy level of each genome is indicated by color. The mean N50s of polyploid and diploid genomes do not differ significantly. b, The observed vs. expected number of genome assemblies available for each ploidy level. Significance values were calculated using Fishers Exact Tests. Diploid genomes are statistically over-represented (P = 7.10e-11) and tetraploid (P = 3.13e-29), hexaploidy (P = 0.0465), and octoploid (P = 1.20e-04) genomes are statistically underrepresented. Ploidy levels that showed a significant over- or under-representation are marked with ** (P < 0.005) or * (P < 0.05).