Comments on: What’s the reason behind having twins? heridetary or just plain coincidence?

By: Cheryl J

Cheryl J — Fri, 17 Dec 2010 20:12:59 +0000

Usually twins are born every 2nd or 3rd generation, specially if there are twins on one side of the family.
Or you can ovulate and one egg splits for "identical twins" or 2 eggs become fertilised from 2 sperm.
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By: tolerant2themax

tolerant2themax — Fri, 17 Dec 2010 19:56:59 +0000

I agree with littlelo.. just would add that there is no (proven) hereditary factor for the splitting of eggs, but that there is a known factor for the production of multiple eggs.
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By: Meesh

Meesh — Fri, 17 Dec 2010 19:36:59 +0000

Along with hereditary reasons the older the mothers age increases the possibility of having twins.
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By: littlelostlamb07

littlelostlamb07 — Fri, 17 Dec 2010 18:56:59 +0000

Some women carry a gene that makes them prone to hyper ovulate while others have twins by chance. So, some women naturally release more than one egg at a time that happen to get fertilized and some women have an egg get fertilized that happens to split. There are also women who undergo fertility treatments and have multiples and that increases her chances for twins too. If twins run in the family on the women’s side, or she has already had a set of twins, her chances are increased of having twins too.
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By: Chestnut

Chestnut — Fri, 17 Dec 2010 18:42:59 +0000

something along the lines of 2 sperms fertilizing a single egg and making 2 embryos or something like that
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By: Sexual Seductress

Sexual Seductress — Fri, 17 Dec 2010 17:54:59 +0000

Almost always hereditary. There are usually twins on either mommy or daddy’s side.
When two sperm fertilize one egg you have identical twins, when two sperm fertilize two different eggs there you have fraturnal twins
EDIT: Identical twins are always the same sex, Fraturnal twins can be different sexes
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