I suppose this is bound to happen every so often:



Twin brothers, both with records (prison time on a "home invasion" charge on one, something that requires sex offender registry on the other), have DNA that matches a semen sample from a 1999 rape case.



"Identical twins are born with identical DNA because they come from the same egg, but experts say the genetic material mutates from birth.



The mutations are so tiny, however, that standard police DNA tests can't find them.



A scientist from Boston said she believed she could detect the mutations, although it would take more than two years and she could not make any guarantees.



She offered to perform the tests, although she said it could cost at least $50,000. Other experts pegged the cost at $100,000 or more.



Authorities spoke with representatives of genetic scientists in Germany and Japan, but they could not provide a reliable test."



I suppose it's too late to thoroughly comb through any alibis? The article states both brothers were out and living in the area at the time, though they're both in jail now on unrelated charges.