The U.S. Constitutionâs 10th Amendment is arguably the most important of all the amendments in the brilliant document that helped shape the United States.
Not even identical twins have the same DNA--although theirs would be far closer than anyone else's. DNA changes over time. Odds of two siblings having the same DNA who did not split from the same zygote are vanishingly small.
So, in this case, the two babies came from one egg. These kinds of twins are calledidentical twins-- and yes, >b>they do have identical DNA, because they came from the same fertilized egg! You can remember it this way: fraternal twins each have their own DNA, while identical twins share theirs.