It would be B, contour plowing
        
                    
             
        
        
        
The answer is gel electrophesis
        
             
        
        
        
Answer:
Explanation:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
 
        
             
        
        
        
Bacterial cells are prokaryotic. 
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