But even though these twins have the same DNA, certain environmental factors, like placement in the womb, can affect each baby's appearance and may make them look slightly different from each other.

Do some identical twins look different? Created with Sketch. Yes. Not all identical twins look identical. Even though these twins come from the same egg and sperm, and even though they have ...

Fraternal or dizygotic twins develop from two different eggs fertilized by separate sperm; they generally share about 50 percent of their genes. Therefore, fraternal twins are essentially like ...

Now, how come some twins look exactly alike and others don't ... Fraternal twins come from two eggs fertilized by two different sperm. Next, maybe you've heard twins can have different fathers.