They will think "why my father is always so tied?"
Both such twins obtain the half of genome which belongs to their father.
Identical twins will have the same father, so a paternity test is done just like for any kid. With fraternal twins, it is possible, but very, very rare, to have different fathers for the babies.
(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.
There is no such thing as "semi-identical" twins. If fraternal twins each take a paternity test, only the real father would show up as the father.
fraternal twins can have separate fathers.
Not really.
My guess, based on my own research into identical twins and paternity identification: sod-all. As identical twins have identical DNA, there is no way of proving who the father is. Even if the other twin says he could be the father, I think it would still wind up going through the courts - and there is still no way of proving who is the real father.
Identical twins. Although horses sometimes have twins I'm not sure if they have identical twins.
If they were not then they would not be called identical twins!
Identical Twins are the result of a single fertilized egg spliting in two producing two genetically identical children. Fraternal twins are the result of the mother producing two eggs each fertilized by a different sperm from the father. This can result in opposite sex twins.
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
I'm not sure on the actual percentages. It firstly depends on if your father is an identical or non-identical twin. (Maternal or fraternal) Non-identical (fraternal) twins are the hereditary type, not the identical ones. Identical twins are simply a hiccup with the cell division during fetal growth, whereas non-identical twins are due to the hereditary tendency of the woman releasing more than one egg at a time. The gene for non-identical twins is directly passed from fathers to daughters, and the chance of having twins usually skips a generation too (like baldness in men!). So, if your father is a twin (a non-identical twin) and you are his daughter, it's possible that you may also have twins, but it's far more likely that your daughter will. My father is a twin (his brother died at birth and it's not known if he was maternal or fraternal unfortunately) and I only have 1 child (a daughter). She has a very high chance of having twins if dad was fraternal.
Twins are identical because they come from the same egg.