Kim - posted on 02/26/2011 ( 27 moms have responded )
When I found out I was pregnant with twins, I always thought twins were hereditary. I have no history of twins in my family that I know of, and neither does their father. Doing research while I was pregnant I read a lot of things that said Fraternal twins are hereditary and Identical are not. One of my ob/gyn's who is a Fraternal twin himself, told me twins are NOT hereditary. What does everyone else think?