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The following pictures and text explain the different ways that cellular division can occur in twins.

Scenario 1: Identical twins

             

       Monozygotic twin 

pregnancy Bi-chorial and bi-

amniotic.

Scenario 2: Identical twins

                   

 Monozygotic twin 

pregnancy Mono-chorial and

bi-amniotic.

Scenario 3: Identical twins

  

               Monozygotic twin 

pregnancy Mono-chorial & mono-amniotic.

Scenario 4: Fraternal twins

              

           Dyzygotic twin

pregnancyBi-chorial and bi-

amniotic.

Monozygotic twins

קישורים

• http://www.tttsfoundation.org/chart1.htm

• http://www.vh.org/Patients/IHB/Peds/General/Twins/Twins.html

• http://www.paternityangel.com/Preg_info_zone/Multiple/Multiple1.htm