If you have watched the trailer of Judwaa 2 (and obviously Judwaa) have you wondered do twins behave like that? Here is what research has to say about the different types of twins. But before that read about 8 things Indians should STOP saying about twins. Dizygotic/Fraternal Twins: It is one of the most common types of twins that you might have come across. These types of twins are caused when two eggs are fertilised by two different sperms at the same time. As the eggs are different they are non-identical and hence look and act different just like siblings.