Odds of having twins?

Question

What are the odds... my grandmother was a twin and my grandfathers sister's daughter had twins...

also, what are the odds of having one-of-each-twins? Girl twins? Boy twins? Identical Twins???? Alright, I've said enough. Also, no fertility meds, either.

Answer 1

Your chance of having twins is only increased if there are fraternal non-identical twins in your maternal family. Here are the odds of having twins:

1 in 85 in general

1 in 250 to have identical twins

1 in 17 if the mother is a fraternal twin

1 in 85 if the mother is an identical twin

1 in 10 when you take Clomid

1 in 2-3 if you have IVF

1 in 90 if you are Caucasian

1 in 60 if you are of African descent

1 in 150 if you are of Japanese descent

1 in 300 if you are of Chinese descent

1 in 8,100 to have spontaneous triplets

1 in 729,000 to have spontaneous quadruplets

3 in 4 to deliver triplets prematurely

1 in 2 to deliver twins prematurely

Under 1 in 50,000 to have conjoined (Siamese) twins

1 in 2-3 to have both twins with head down (vertex) at birth

Answer 2

im not sure but i wonder what my odds would be? me mother was a twin but her twin died at birth and me and my sister look almost exaclty alike just im a little bigger cause i have a child. i believe my grandmother was a twin also.