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. 2021 May 5;11:9637. doi: 10.1038/s41598-021-89001-0

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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 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/.

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Human evolution examined using semihomologous approach. The organisms presented on the X-axis are set in the order determined by the neural network from the organism most evolutionarily distant from Homo sapiens (organism number 1 on the X-axis, i.e. Tupaia belangeri), to the organism closest to human (organism number 51 on the X-axis, i.e. Homo heidelbergensis). "R"—homologous positions, "# + $"—semihomologous positions (sum of positions with transitions and transversions), "−"—positions with two or three point mutations, "#/$" factor—ratio # to $.