If identical twins married identical twins could at least some of their kids look like twins?
Acctually, they're children would not look like twins. But all of their children would look like brothers and sisters.
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.
Identical twins are the result of a single fertilized embryo splitting in two at an early stage and forming two viable embryos. As such, identical twins have identical DNA. Fraternal twins are the result of two distinct fertilized embryos being viable. As such, they have different DNA. They could even be different sexes.