When I think of DNA and genetic codes it reminds me of my car. I really know next to nothing about cars. I mean, I can do the basic things, like check my oil or tire pressure, but I always feel like if I change something I'll mess something up. I think that DNA is something that all humans understand at least as little as I understand cars. It's great that we are making progress in researching these matters, but I think we're far from the point where it would be smart make any changes in human DNA. I think it is great that this information can be used to diagnose different things. I have heard that it's possible to test an embryo's DNA before implanting it into the mother to see if it will have any big diseases. I think DNA will play a much bigger role in medicine in the future.