Yes, twins can definitely have twins. Identical twins, fraternal twins, you name it. However, it's only fraternal twinning that's hereditary.

If you're pregnant with twins it might come in handy to know how twins are formed. This way you'll know whether your twin babies are fraternal or identical.

Parents are sometimes misinformed during prenatal tests. Use the twin test below and learn the zygosity of your twins. Find out for free whether your twins...

It might come in handy knowing how identical twins are formed. Then it’s easier for you to determine if twin babies are identical or fraternal.

Some women dream of being pregnant with two babies. Find out how to have twins.

If you give birth to boy and girl twins you’ll be told that they are fraternal and stem from two different eggs. But in extremely rare cases they can in fact...