A reader seeks to identify a movie about genetic engineering and mutants:

We not remember when we saw part of it on TV. The movie starts out with “perfect” humans rescuing other humans from “mutants”. The mutants were the people who have adverse reaction to shot of genetic engineering. People have to wear a necklace that glow certain color representing a specific DNA. The “perfect” could not mate with others who have the same DNA. No mating with same color wearers.  Can you help me find the title of the movie? I have ask several video stores and tried sci-fi links.

Can you help?