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.
Identical do have the same genotype. After all, they come from the same fertilized egg. Recent studies have shown that identical twins have very similar not identical DNA, but for the most part, according to basic biology it is identical.