Hybrid zones and adaptation
Hybrid zones provide natural evolutionary laboratories for studying adaptation and gene flow. Populations in hybrid zones are expected to have higher levels of genetic variation than intraspecific populations, and they may have the genetic capacity to evolve new adaptations or new trait combinations. However, hybrid genotypes may also experience some genetic incompatibilities. We have used genetic and genomic tools to investigate the genetic structure and evolutionary dynamics of two spruce hybrid zones in British Columbia.