QUESTIONS. “What is the nature of genetic change in plant speciation? What is the relationship between prezygotic reproductive isolation via flower traits and associated pollinator behavior? Did bee pollinators co-evolve and co-diversify with angiosperm flowers, and did butterfly diversity emerge much later? In what ways do floral traits affect rates of plant species diversification, for example traits controlling bilateral floral symmetry and the morphology of nectar spurs?”
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