In most systems of social polymorphism, members of a given physical caste are equipotent. However, in some seed harvesting ants, caste determination appears to have a genetic basis. This study, working with ants in a hybrid zone, is one of the first to conclusively demonstrate a gentic role in caste determination.
Species 1: Hymenoptera Formicidae Pogonomyrmex rugosus (rough harvester ant)
Keywords: caste, polymorphism
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