Okay, I understand what you have to do in this game, put it was almost impossible for me to figure it out. I persisted though.
There could have been some work on getting the input for changing the order of DNA more intuitive and responsive. I think I had to double click, which basically means most people won't even realize they can click on it at all. Also, the highlighting of the letters themselves is way too subtle it's hard to tell you can even interact with them either. Once I figured out what to do with the letters, I found the concept somewhat interesting actually. I think you could have focused more on just that puzzle aspect of using DNA sequences to unlock doors and polished that up.
I have no idea how to "Touch clones to get DNA" though...