Genomic evidence of globally widespread admixture from polar bears into brown bears during the last ice age
James A. Cahill, Peter D. Heintzman, Kelley Harris, Matthew Teasdale, Joshua Kapp, André E Rodrigues Soares, Ian Stirling, Daniel Bradley, Ceiridwen J. Edwards, Aliaksandr A. Kisleika, Alexander V. Malev, Nigel Monaghan, Richard E. Green, Beth Shapiro
The paper analyzes ancient DNA from brown bear populations to show widespread polar bear admixture during the last ice age, peaking when their ranges overlapped.
bioRxiv · Jun 25, 2017 · PreprintEvolutionary Biology