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Forum: Parenting Multiples   05-01-2012, 02:45 PM
Replies: 15
Views: 1,842
Posted By ackerna
If you twins share one sac - they are identical...

If you twins share one sac - they are identical - no doubt as the only way this can happen is if the egg splits. 
 
There are 2 types of twins that share the same sac (outer membrane). ...
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