This is a remarkable film that deals with the consequences of DNA analysis as a political and law enforcement tool and as part of a eugenics program.  The science is sound and the story is well written and with the exception of a few minor bumps quite believable.  Spoiler alert! The notion that a bunch of astronauts would embark on a trip to the outer planets dressed in business suits is a bit odd but other wise the attempts to beat the system are both believable and well portrayed.  Well worth watching.