identical twins and twins

                                                       Identical  twins

                           
          effect mirrors twins is that when the afterbirth moved right one       another as a mirror moving  towards the left, so almost always         one is right and one left-handed.

      differences between identical twins and  twins
      
         identical  twins                               twins
                                                                
  also called monozygotic      also called fraternal twins    
   
    One ovum, one                 two ovum , two spermatozois
   spermatozoid, divided       
                                              can have different sex
   always have the same sex  
physically similar  or identical     can seem much or as little as two                                                              brothers                         
                

From a medical point of view it is interesting to know if they are identical or fraternal twins for compatibility donations or to anticipate the other brother congenital diseases you might have one in the case of identical twins.