Answer:
 chromosomes of a cell are in the cell nucleus. They carry the genetic information. Chromosomes are made up of DNA and protein combined as chromatin. Each chromosome contains many genes. Chromosomes come in pairs: one set from the mother; the other set from the father.
 
        
                    
             
        
        
        
Answer:
C
Explanation:
The line is positively going up, they both will increase 
 
        
             
        
        
        
Electron microscopy would be most useful in observing the structure of a virus
        
             
        
        
        
Yes they do differ beneath the formative phase