    2  
          
                                                                                                                                                                                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                                                                             
                                                                                                                                                                        
               
                                                                                                                                                                                  
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
           
                                                                         D N A                                                                                                                                                                                                            