Abstract
The test used in this study was applied to colonies of Africanized bees (“Apis mellifera adansonii”), of imported Italian bees (Apis mellifera ligustica), of their Fi hybrids, and of the progeny of Fi drones backcrossed to Africanized and Italian queens. The data from Fi colonies indicated dominance of the Africanized bees; other data emphasize the complexity of the method of inheritance of “aggressiveness”.