Final answer:
The transfer of antibiotic-resistant genes from genetically engineered bacteria to disease-causing bacteria has occurred and can result in the creation of antibiotic-resistant pathogens.
Step-by-step explanation:
The transfer of antibiotic-resistant genes from genetically engineered bacteria to disease-causing bacteria has occurred. Antibiotic resistance genes can be transferred through various mechanisms such as conjugation, transformation, and transduction. This transfer can result in the creation of antibiotic-resistant pathogens, which pose a significant health risk.