Is the DNA from identical twins identical What about fingerprints?
There are differences in both DNA and fingerprints.
I believe that DNA is never identical even when twins are born. Everyone is unique and no two souls or fingerprints are identical.
To be strict, if you look real close, they haven't. But their genes are very, very similar. And the why is because identical twins start out as one fertilized egg that splits and produce two babies. One fertilized egg, one set of genes. Identical twins have the same DNA because they were created when a fertilised egg split in half - so they are two identical copies of the original. Identical twins have different fingerprints…
If identical twins marry identical twins could at least some of their kids look like twins having similar fingerprints?
They may look alike, but they will never have the same fingerprints, because fingerprints are created by differences of thickness in the dermal layer. It is independent of genetics, therefore, twins will never have identical fingerprints and any similarities between twins fingerprints would merely be coincidental.