Well, you can have identical which means the egg splits, or you can have fraternal where there are two separate eggs.
twins are such an interesting subject!what can you tell me about them They're two offspring from the same pregnancy. Would you like to know more? yeah! what type of twins are there?
Twins can be either ''monozygotic'' (''identical''), meaning that they develop from one zygote, which splits and forms two embryos, or ''dizygotic'' (''fraternal''), meaning that they develop from two different eggs.