Off topic but curious

taltal725

Does anyone know if when you get pregnant with twins if they can tell if they are identical vs. fraternal based on initial Ultrasounds? From *the little* I have read it seems that only a DNA test can tell 100% and this is typically performed after the babies are born. I've read that often times identical twins share a placenta, but that there exceptions to that rule as well. My friend is 6 weeks pregnant with twins and she just found out today and so we were discussing this b/c the ultrasound tech did not discuss it today and she did not ask because she was so shocked. 

adoubleu12

You can only tell if they are Identical if you get a mo/mo(one sac, one placenta, VERY rare) or mo/di (two sacs, one placenta) confirmed in your u/s.  If you have di/di (two sacs, two placentas) they are usually fraternal, but there is a 1/9 chance that they are identical.  In my case, I had di/di twins.  They are both female and have the same blood type, and since they look similar we will not know for sure if they are id/frat until we get a DNA test done.  

taltal725

thanks!