<span>Here are the choices: </span>
(a) deletion(b) inversion (c) duplication(d) insertion 
Answer: (d) insertion 
This mutation occurs when (an) additional nucleotide base pair/s attach themselves into an existing DNA strand. This can possibly result to diseases such as cystic fibrosis and myotonic dystrophy. 
        
             
        
        
        
Chemical energy is stored in the battery cells and converted to electrical energy when it's needed by the toy robot
        
                    
             
        
        
        
Nucleic acids also typically contain phosphorous, and nitrogen plays an important structural role in nucleic and proteins. The proteins, being made up a diverse set of amino acids, have, in addition to carbon, hydrogen, oxygen, and nitrogen, the elements sulfur and selenium.