Functions. this is the very idea behind differentiation.<span />
        
                    
             
        
        
        
Have different views or opinions
        
                    
             
        
        
        
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
The  two structures make up a single replicated chromosome is sister chromatids.The term 'sister chromatid<span>' only applies when the identical copies are closely associated with one another and held together by a centromere. </span>
        
             
        
        
        
It’s stored energy yk you could of just looked it up