Here's a thought, as we're all molding our letters with copy & paste. What if you drew one alphabet, avoiding the use of copy & paste—just judging by eye. Then take a some letters, maybe d, i, Q, and E*, and redraw the rest of the alphabet. Probably halfway through, remove your DNA letters, and redrew those too. Do it a few times, maybe with different letters for DNA. I wonder what you'd come up with.
I would assume you would get a few alphabets look, without close examination, much the same. But if these different sets of letters were substituted and interspersed throughout the text would create a lively underdone, or perhaps bring back some of the flavor missing from the days when letters were things, not pictures, or bezier representations of things.
* There is no perfect set of DNA letters. I chose d because you have your ascender, its serif, a bowl, and the bottom-right terminal that is usually shared with u and a; i because you get a dot, x-height serif, and baseline serif; Qbecause it is round, and also has a tail; E because it has just about all uppercase serifs in one glyph.
Not really a great example of what I'm talking about, but it's towards the idea. (And what ever happened to the scrolling images?)