"Identical twins come from a single fertilized egg, or zygote, that splits in two. Both halves contain the same DNA and eventually form two fetuses. But clones are formed in a different way. The first step in making a clone is to empty the DNA out of a fertilized egg". -Google
When you clone somebody or something you get the same exact thing as a result, EXACTLY IDENTICAL. But, when you have an identical twin, there are going to be some gene differences between the 2 identical twins.
