The way they talk and work together
        
                    
             
        
        
        
They are all the examples of organ system.
        
                    
             
        
        
        
Answer;
petit arm 
Explanation;
All human chromosomes have 2 arms, the p (short) arm and the q (long) arm. They are separated from each other only by a primary constriction, the centromere, the point at which the chromosome is attached to the spindle during cell division. 
The symbol "p" stands for "petit", small in French, while "q" was chosen merely because it was the next letter in the alphabet.
 
        
                    
             
        
        
        
The big bang theory states that the universe began approximately 10-20 billion years ago in an expansion of the universe emanating from an extremely compact point. The occurrence of super massive black holes contradict the big bang theory. Super massive black holes are found at the center of galaxies and is what keeps them together. Models do not explain how these would have formed if the big bang occurred the way it was proposed.