Codes Within Codes: How Dual-Use Codons Challenge Statistical
Methods for Inferring Natural Selection - Evolution News & Views
Evolution News and Views Intelligent Design NEWS    David
Klinghoffer recently noted the discovery of dual-use codons,
dubbed "duons," where a triplet of nucleotides can have multiple
functions. Of course one of those is the standard function of
encoding an amino acid. But now it turns out a codon can have
another function as well: it can bind transcription factors
which regulate the transcription of the gene. As many are now
observing, this means that a single nucleotide sequence can have
multiple levels of meaning. That is to say, there are multiple
codes within the genetic code. In fact, one commentator observed
that on the same analysis, codons may have more than two uses:
By this logic one could coin the term "trion" by pointing out
that histone binding is also independently affected by A-C-T-G
letter frequencies within protein-coding stretches of DNA.  It
boggles the mind to