An Issue..

[MrGazet]

no if the egg is fertilized.

[PriceTags]

Your parents have been telling you crap.

A female releases one egg every menstrual cycle. Once this has been fertilized, it cannot happen again. Eggs stop being released so the woman has to wait until pregnancy is over to start all over again.

It happened once. I read it in the paper and told my mum and she said "the doctors think that's what happened to me when I was having you". Also, read Jess (i think)'s post. It's a rareity.

I found this on Wikipedia, and I think this is how it happens:

A very rare third type of twinning is believed to occur in which an unfertilized ovum splits into two identical cells prior to fertilization, creating a second complete ovum, called the "polar body". After splitting, both ova are then fertilized by different sperm. This results in twins who have received identical genes from their mother, but of the genetic material they received from their father, only about half of it is shared. Thus polar body twins have about 75% of their genes in common, less than the 100% shared by identical twins but more than the 50% shared by fraternal twins. They share some features of identical twins and some features of fraternal twins and are so-called half-identical twins. However, DNA-based zygosity tests are currently not available to determine if twins are polar-body twins, so there has been no confirmation that such twins actually exist.

It turns out that it's not two separate eggs, but one that's split. So unless your girlfriend's got that, you should be fine.

[&]

Strange.
Thank god im gay (Y)
and lol at jamie.

[MrGazet]

It happened once. I read it in the paper and told my mum and she said "the doctors think that's what happened to me when I was having you". Also, read Jess (i think)'s post. It's a rareity.

I found this on Wikipedia, and I think this is how it happens:


It turns out that it's not two separate eggs, but one that's split. So unless your girlfriend's got that, you should be fine.

better pray she dusnt got that

[FlyingJesus]

A very rare third type of twinning is believed to occur in which an unfertilized ovum splits into two identical cells prior to fertilization, creating a second complete ovum, called the "polar body". After splitting, both ova are then fertilized by different sperm. This results in twins who have received identical genes from their mother, but of the genetic material they received from their father, only about half of it is shared. Thus polar body twins have about 75% of their genes in common, less than the 100% shared by identical twins but more than the 50% shared by fraternal twins. They share some features of identical twins and some features of fraternal twins and are so-called half-identical twins. However, DNA-based zygosity tests are currently not available to determine if twins are polar-body twins, so there has been no confirmation that such twins actually exist.

That's what I was on about before, if that happens then theoretically you could have twins with different fathers.

[PriceTags]

That's what I was on about before, if that happens then theoretically you could have twins with different fathers.

Yes. Even if they do have the same dad, they only share 50% of the same DNA, which could explain why my sister and I don't look particularly alike - we only have same hair and eye colour.