<code id='E2B2017D60'></code><style id='E2B2017D60'></style>
      • <acronym id='E2B2017D60'></acronym>
      <center id='E2B2017D60'><center id='E2B2017D60'><tfoot id='E2B2017D60'></tfoot></center><abbr id='E2B2017D60'><dir id='E2B2017D60'><tfoot id='E2B2017D60'></tfoot><noframes id='E2B2017D60'>
      • <optgroup id='E2B2017D60'><strike id='E2B2017D60'><sup id='E2B2017D60'></sup></strike><code id='E2B2017D60'></code></optgroup>
        5. <b id='E2B2017D60'><label id='E2B2017D60'><select id='E2B2017D60'><dt id='E2B2017D60'><span id='E2B2017D60'></span></dt></select></label></b><u id='E2B2017D60'></u>
          <i id='E2B2017D60'><strike id='E2B2017D60'><tt id='E2B2017D60'><pre id='E2B2017D60'></pre></tt></strike></i>
           


   

   

   
   
   
   
   
   
   
   
   
   
   
   
   

   
   
   
   
   
   
   
  
           
  
           
  
           
   
           
    
           
     
           
      
           
       
      
           
      
           
       
           
        
           
         
           
           
          
           
         
           
         
           
           
          
           
         
           
          
        
           
       
           
       
           
        
           
        
           
        
           
        
           
       
           
      
           
       
      
           
      
           
       
           
       
           
       
           
       
           
        
           
        
          
          00:00 
        
           
       
           
       
           
      
           
      
           
        
        
        
       
           
        00:00 
         
        00:00 
        LIVE 
       
           
        
       
           
        
           
        
           
        
           
        
           
       
           
       
           
       
           
        
        
        
        
        
        
        
        
        
      
           
       
    
    
      
           
       
           
      
           
     
           
     
           
       
     
           
     
           
      
           
      
           
      
           
      
           
       
           
      
           
      
           
      
           
       
           
       
          
         buffering 
       
           
      
           
      
           
       
           
        
           
        
          
          Replay 
        
           
       
           
      
           
       
      
           
      
           
       
           
       
           
        
           
        
           
        
           
       
           
      
           
      
           
      
           
      
           
      
           
       
           
      
           
     
           
     
           
      
           
     
           
     
           
      
           
       
           
        
           
       
           
       
           
        
          
          LIVE 
        
           
        00:00 
         /  
        00:00 
       
           
       
           
        
           
        
           
        
           
         
           
         
           
         
           
         
           
         
           
         
           
        
           
        
           
        
           
       
           
       
           
        
           
        
          
          LIVE 
        
           
       
           
       
           
        
           
        
          
          CC 
        
           
       
           
       
           
        
           
       
           
       
           
       
           
        
           
        
           
         
           
        
           
       
           
       
           
        
           
       
           
      
           
      
           
       
           
        
           
        
           
         
           
         
           
         
           
          
           
          
           
          
           
         
           
        
           
       
           
      
           
      
           
       
           
     
       
           
    
       
           
       
    
  
       
           
   
       
           
       
       
           
      
           
      
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       Opacity : 
        
      
           
     
           
     
           
     
           
      
           
  
     
           
    
           
    
           
    
           
     
          
       Share: 
     
           
      
     
           
      
      Copy 
     
           
      
    
           
    
          
      Close 
      
    
           
    
           
      
    
           
    
           
   
           
  
           
  
           
    
    
    
   
           
   
           
 
    
   
           
   
           
   
           
    
           
     
           
      
           
       
           
        
           
          
          
         
          
          explore 

          
          
            
          
          

           
           
        
           
       
           
      
           
     
           
    
           
    
           
     
           
      
           
      
           

                       
          Wikipedia  
          
                                   
                 
                                      author：knowledge   
                                        
                                      
                                      -
 
browse：3324
                                  
                                    
          
                                    
            
          
 
          This image depicts a karyotype in hues of purple. -- health coverage from STAT
          A karyotype, or chromosomal profile																									CDC
          Two years ago, when an international team of scientists announced it had finally sequenced and assembled the first fully complete human genome, including previously unmappable regions, Melissa Wilson was ecstatic. She reached out to Adam Phillippy, a researcher at the National Institutes of Health and a leader of the Telomere-to-Telomere Consortium to congratulate him on the accomplishment. And to ask the question she was almost too excited to utter: “And the Y?”
          Wilson is an evolutionary geneticist at Arizona State University. For the past 10 years, her lab has been prying and probing into the origins of so-called sex chromosomes — the unnumbered, asymmetrical pair that in the human species go by the designation of X and Y. It has been a somewhat lonely corner of the DNA-studying community. For decades, researchers dismissed the Y chromosome as a “genetic wasteland,” a graveyard where genes (and careers) go to die.
          advertisement
          That has to do, in part, with the Y chromosome’s unique evolutionary history. At the dawn of mammals, X and Y were just like every other pair of chromosomes — identical in length and shape and number of genes.
          Unlock this article by subscribing to STAT+ and enjoy your first 30 days free!					
          GET STARTED													Log In											
           
 
 
          

                              
          
                                 Previous article：

                                
                                          Dobbs anniversary: the lost opportunity of abortion as health care
                                
                            
          Next article：  
                                      
                                          David Ricks of Eli Lilly: best biopharma CEO of 2023
                                                                    
          

      
           
      
           
        
           
                                               
        
           focus 
           
                   
      
           
  
  
          
    
          
        
          
            
          
                                                     
                
          Wikipedia
          
                            
          
        
          
        
    
          

          

    

      
           
     
           


   
    
           
   
           
  
 

  
           
    
           
           
           
            
            Back To Top 
           
           
           
           

            
           
                                                                    
                 
          focus
           
                                      
            
           
          
           
                                                          
             
          Wikipedia
           
                             
            
           
            
           

                                                         
             
          knowledge
           
               
              
            
           
            
           
                                                         
             
          explore
           
                             
      
           
 
     
           
     
           
      
          
              AdobeThere’sampleevidencethatprivateequitybuyoutsinhealthcaredriveupcosts.Anewstudyshowsqualitydecli
             
           
      
          
        © 2013-2023.Company name All rights reserved.Site Map 
         WSS-More Templates  
             Guangdong ICP1name