It's not enough that you have genetic coding that produces a given protein or enzyme.
Now, you have to have exogenous coding that tells the genetic coding which part of a protein or enzyme to produce, and in which direction, and connected to what.
Much of this coding is in the non-protein coding portion of DNA strands ~ however, they (the famous "they" who work in laboratories) have determined that much of the important intellectual work taking place inside cells occurs in the form of the "non protein coding" regions actually producing RNA instead of DNA.
Even the place of supposedly primitive RNA is being revised quickly as we speak.
The current view of the entirity of the DNA/RNA machinery underlying our forms of live is now Billions of Times more complex than was imagined in the days of yore (a few months ago) when all we had to be concerned with were genes!
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