Genome-wide coancestry reveals details of ancient and recent male-driven reticulation in baboons
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Sørensen, E.F., Harris, R.A., Zhang, L., Raveendran, M., Kuderna, L.F.K., Walker, J.A., Storer, J.M., Kuhlwilm, M., Fontsere, C., Seshadri, L., Bergey, C.M., Burrell, A.S., Bergman, J., Phillips-Conroy, J.E., Shiferaw, F., Chiou, K.L., Chuma, I.S., Keyyu, J.D., Fischer, J., Gingras, M.-C., Salvi, S., Doddapaneni, H., Schierup, M.H., Batzer, M.A., Jolly, C.J., Knauf, S., Zinner, D., Farh, K.K.-H., Marques-Bonet, T., Munch, K., Roos, C., Rogers, J., 2023. Genome-wide coancestry reveals details of ancient and recent male-driven reticulation in baboons. Science 380, eabn8153.
INTRODUCTION
As a widespread but comparatively young clade of six parapatric species, the baboons (Papio sp.) exemplify a frequently observed pattern of mammalian diversity. In particular, they provide analogs for the population structure of the multibranched prehuman lineage that occupied a similar geographic range before the hegemony of “modern” humans, Homo sapiens. Despite phenotypic and genetic differences, interspecies hybridization has been described between baboons at several locations, and population relationships based on mitochondrial DNA (mtDNA) do not correspond with relationships based on phenotype. These previous studies captured the broad outlines of baboon population genetic structure and evolutionary history but necessarily used data that were limited in genomic and geographical coverage and therefore could not adequately document inter- and intrapopulation variation. In this study, we analyzed whole-genome sequences of 225 baboons representing all six species and 19 geographic sites, with 18 local populations represented by multiple individuals.