Ooo same here! (As in your dad's mom right??) Yeah my Oma (German for Grandma) had a twin brother as well. I keep wondering where my twin is at!! It's only supposed to skip a generation!!I have a feeling one of us will pop out twins...I'd really love to have twins!!!
(Girls of course.
)
It carries through men to their daughters, supposedly. They can pass it to their sons but same thing- my brother won't HAVE twins, but he'll keep passing the gene. So your Oma would have passed it to your dad who couldn't have HAD twins but he would have passed the gene to each of you guys! Good luck!
We'd rather have a boy/girl so then Tom can go to the VA, snip snip and we can be done with it.

I keep getting $10 off a $10 purchase from JCPenny (I've gotten FIVE now!) and I'm using them buy baby clothes. Too cute!
