Genetic engineers use the 3 methods of base excision,nucleotide excision and mismatch repair to remove human DNA for use in splicing bacterial DNA.
Hope that helps.
        
                    
             
        
        
        
We can confirm that a person with very toned muscles likely has tightly packed myofibrils. 
<h3>What are myofibrils?</h3>
These fibers are the protein filaments that cause contractions in the structure of the muscle. Weight training tones muscles by increasing the number of myofibrils in a sarcomere, thus increasing its capacity to produce force. 
Therefore, we can confirm that a person with very toned muscles likely has tightly packed myofibrils. 
To learn more about muscle fibers visit: 
brainly.com/question/1426285?referrer=searchResults