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. 2023 Jul 5;40(7):msad141. doi: 10.1093/molbev/msad141

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© The Author(s) 2023. Published by Oxford University Press on behalf of Society for Molecular Biology and Evolution.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2. — Evolution of sequence divergence for interacting WGD- and SSD-derived gene pairs. Rates of nonsynonymous substitutions per substitution site (K_a) were used to represent sequence divergence, and rates of synonymous substitutions per substitution site (K_s) were used as a proxy for time. As linear models cannot account for saturation at higher K_s values, a Michaelis–Menten curve was fitted in the scatter plot. The plot shows that WGD-derived gene pairs have lower sequence divergence over time as compared to SSD-derived pairs.