The theory of endosymbiosis suggests that a<span> primitive aerobic prokaryote was engulfed by a larger anaerobic prokaryote. C
HOPE THIS HELPS! ^_^</span>
        
             
        
        
        
The correct answer is one of its two alleles.
        
                    
             
        
        
        
Answer:
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing.