Answer:
there are all kinds of signals occur in the brain
Explanation:
Hope this help not sure if it is the right answer
 
        
                    
             
        
        
        
Answer:
what I don't understand what is the Ctcagt
 
        
             
        
        
        
Answer:
B. introns; exons
Explanation:
Related genes from different organism usually translate to proteins of indispensable functions. This means that the proteins must be similar in terms of amino acids produced. Therefore the coding region must be highly conserved. These can be found in the introns. Conversely, exons are not a part of the coding sequence and therefore not required for translation. These sequences may be less conserved.
 
        
             
        
        
        
The answer is A, convergence.