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.
Best Answer: The chances of two brothers having the same DNA test result are 0.01% - have a look at the rest of the answer if you want to know how i worked this out. This of course is not the case if the brothers are identical. I think therefore it is highly unlikely that the other brother could be the father but it is still possible. Everyones DNA is actually pretty similar infact we have 99% of the same DNA as our closest ape relatives.