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. 2022 Feb 16;71(5):1147–1158. doi: 10.1093/sysbio/syac011

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© The Author(s) 2022. Published by Oxford University Press on behalf of the Society of Systematic Biologists.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 3. — The effect of sampling on the interpretation of the D-statistic, using bear genomic data as an example. a) Phylogenetic relationship of the five bear taxa sampled. The gray arrow shows the introgression inferred from previous studies. b) D-statistic calculated from two 4-taxon subsets. The number of ABBA and BABA patterns is given below the trees. In subset 1, the Slovenian bear, a lineage that is not thought to be involved in introgression, is removed. In subset 2, the donor of the introgression shown in 3A (i.e., the polar bear) is removed. Introgressions were inferred from the D-statistic (grey arrows), and their congruence with other studies (tick-mark congruent, cross-mark not congruent) is indicated above the arrow.

Inline graphic — The effect of sampling on the interpretation of the D-statistic, using bear genomic data as an example. a) Phylogenetic relationship of the five bear taxa sampled. The gray arrow shows the introgression inferred from previous studies. b) D-statistic calculated from two 4-taxon subsets. The number of ABBA and BABA patterns is given below the trees. In subset 1, the Slovenian bear, a lineage that is not thought to be involved in introgression, is removed. In subset 2, the donor of the introgression shown in 3A (i.e., the polar bear) is removed. Introgressions were inferred from the D-statistic (grey arrows), and their congruence with other studies (tick-mark congruent, cross-mark not congruent) is indicated above the arrow.