3 doctors weighed in:

Which partner will determine a multiple birth, the father or the mother?

3 doctors weighed in
Dr. Selwyn Oskowitz
Fertility Medicine
1 doctor agrees

In brief: Mother almost always

Multiples are due to extra eggs ovulated (older women ; or from fertility drugs; or incidental identical twinning9 one egg that splits when fertilised and dividing.

In brief: Mother almost always

Multiples are due to extra eggs ovulated (older women ; or from fertility drugs; or incidental identical twinning9 one egg that splits when fertilised and dividing.
Dr. Selwyn Oskowitz
Dr. Selwyn Oskowitz
Thank
Dr. Philip Chenette
Fertility Medicine

In brief: The mother

There is a gene that affects the number of eggs a woman will release, so the mother's family history will have some small effect on the fraternal twin rate, but the father will not.
Identical twins are not affected by family history.

In brief: The mother

There is a gene that affects the number of eggs a woman will release, so the mother's family history will have some small effect on the fraternal twin rate, but the father will not.
Identical twins are not affected by family history.
Dr. Philip Chenette
Dr. Philip Chenette
Thank
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