Join Date: Mar 2006
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Originally Posted by sarahloughmiller
Twins do not have to run in your family for you to have them. They say identical twins are random and fraternal are hereditary, not sure how much research was done to come to that though.
Originally Posted by ChristaN
I've heard that too. However in my family all five sets of twins are identical. We must be drinking some strange water or something ! I think that the idea is that fraternals run in families b/c it can be heriditary to release more than one egg at a time, but having an embryo split is purely chance.