2 sets of identical twins?

my cousin had a pair of identical twins 20 years ago 3 years ago she had another pair of identical twins, by a different father how common is this ?

Answer:
The father isn't the one who determines twins, so it's not that unusual that she would have 2 sets. If they are fraternal, she must release 2 eggs when she ovulates. If they are identical, then she is genetically predisposed to having the egg seperate after fertilization.
she might just be one in one thousand
How strange is that after all those years,
ummm i don't really know, but i know a lady who had twin girls, then one boy, then twin girls again. I also know a woman who had three sets of twins. I think it happens more than what we think.
I don't think it's very common apart from in women who have IVF treatment. But saying that my granddad had two sets of twins as siblings but this pattern hasn't continued down the genetic line.. YET!
probalby not as weird as my Uncle's girls..
He's got two sets of identical twin daughters by two different wives..

She could have some gene in her family in her that produces her eggs to want to split..
but my uncle finding two different women with that seems like it'd be less probable?
My Aunt had two sets of indentical twin boys within 5 years of each other. No-one else in the family has ever had twins before that!
i have never heard of that
Not sure how common that is. The previous pastor at my church had two sets of identical twins a few years apart. That was the first time I'd ever seen that happen, too.
the twin gene must run in her side of the family if she has 2 different fathers
it just depends if twins run in the family
Wow... sounds unusual but I just had twins 15 months ago one boy and one girl and we are thinking about having one more and the doctor told us that we are in a 97% to have another set... He has done lab work and everything on us to confirm this... weird how things work..
Its more common than people think, if the twin gene is on her side then she is carrying it and it is more than likely gonna happen at some point.

A friend of mine has 7 kids, all boys.!
not very common..but i have identical twin..and after we were born 11 years later my mom gave birth another identical twin girls ..11 YEARS LATER!..so 4 girls identical..they look like us too..we r 24 they are 13 we all look same! :-))...my mom thinks its coming from her family coz her aunts were triplets
I HAD TWIN BOYS IN 1991 THEY AR NT IDENTICAL BUT I'M NOW IN MY 28TH WK CARING TWIN GIRLS WHICH ARE IDENTICAL .I WAS TOLD IT WAS VERY UNLIKELY I WOULD BE CARRYING TWINS AGAIN WHEN I FIST FOUND OUT THAT I WAS PREGNANT .NOW WE KNOW THAT ITS TWINS THERE IDENTICAL AND THERE GIRLS HOW COMMON IS THAT. SO YES I WOULD SAY IF YOU'VE HAD ONE SET YOU COULD GET ANOTHER !!

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