Bacteria ‘invent’ new enzyme in the lab under scientific supervision

The importance of this cannot be overstated. There are levels of understanding of evolutionary theory. In Chemistry, my chosen field, you learn the “basics” of chemistry about 5 times before you’re done with an undergraduate degree. Every time you re-learn it, you learn all of the problems with the old way you learned it and all of the ways the new way of understanding is better. It’s unrealistic to teach graduate chemistry to elementary school students – they need the context of a few benign simplifications in order to approach the deeper understanding. It’s the same way with evolution. I’m not an evolutionary biologist, but I understand that there are levels of subtlety and that the simple explanations are not the whole story.

One of the most hard-to-believe concepts is that biologcal ‘designs’ come from the vast sea of probability. How could randomness produce an invention? Doesn’t invention require intelligence? It all comes down to amplification. Looking for a fully formed functional enzyme in the sea of randomness would take forever (almost literally). But if you had a way to amplify every useful step along the way from any random junk all the way to something useful, then the whole thing can happen pretty fast.

How fast? About 30,000 generations. Scientists have put bacteria in an environment where it would be advantageous to invent an enzyme. The bacteria did it in 30,000 generations. That’s ‘macro-evolution’ on a pertri-dish. It’s a terrible blow to those who have touted the idea of ‘irreducible complexity,’ and people who consider evolution to be an unproven hypothesis.

Of course, they hold themselves to a different standard of truth, so there’s really no basis for rational argument. I’m not sure about it being a ‘miracle,’ but I will concede this: the wow factor is really high for the feat of making critters invent an enzyme on cue.

-Peter

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