Data from: Population genomics of divergence within an obligate pollination mutualism: selection maintains differences between Joshua tree species

Anne M. Royer, Matthew A. Streisfeld & Christopher Irwin Smith
PREMISE OF THE STUDY: Speciation is a complex process that can be shaped by many factors, from geographic isolation to interspecific interactions. In Joshua trees, selection from pollinators on style length has been hypothesized to contribute to the maintenance of differentiation between two hybridizing sister species. We used population genomics approaches to measure the extent of genetic differentiation between these species, test whether selection maintains differences between them, and determine whether genetic variants associated with...
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