Which pair of features is possessed by all vertebrates at some point in their life?

+1 vote

 

  

adult hemichordate

  

adult echinoderm

  

juvenile urochordate

  

juvenile cephalochordates

 

asked Dec 29, 2012 in Biology by anonymous
    

1 Answer

0 votes

 

tail and cranium

 

answered Dec 29, 2012 by anonymous

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