The rules don’t clarify the DNA mixing. If I mix a basic worth 3 and another basic at 2, do I get an advanced at 5?
I don't think the DNA have individual values assigned to them. There are simply 3 basic DNA icons and 3 advanced icons. No values attached, except for mixing where 2 basic equals l advanced.
Each step on the track is an individual DNA. Any 2 basic DNA can be swapped for any single advanced DNA.