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. 2021 Jul 15;8(12):nwab127. doi: 10.1093/nsr/nwab127

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© The Author(s) 2021. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.

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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Figure 6. — (a) Migration (MSC+M) or isolation-with-migration (IM) model for two species (A and B) showing the parameters. (b) A gene tree for two sequences (a and b) with divergence time t and four migration events, with . The migration rates (per mutational time unit) are shown beneath the horizontal lines representing migration events. Note that time runs forwards in (a) when we define migration rates (M_AB or m₂) and backwards in (b) when we trace the genealogical history at the locus.

Inline graphic — (a) Migration (MSC+M) or isolation-with-migration (IM) model for two species (A and B) showing the parameters. (b) A gene tree for two sequences (a and b) with divergence time t and four migration events, with . The migration rates (per mutational time unit) are shown beneath the horizontal lines representing migration events. Note that time runs forwards in (a) when we define migration rates (M_AB or m₂) and backwards in (b) when we trace the genealogical history at the locus.