Are you asking us to golf the entire function, or just the substitution part? Here's a small savings: 
sub RNA {
  # hash here
  $_=pop;s/..?.?/$g{$&}/g;$_
}

[download]
The hash will take me some more time. I'll do that later.

japhy -- Perl and Regex Hacker

In reply to Re: (Golf) RNA Genetic Code Translator by japhy
in thread (Golf) RNA Genetic Code Translator by tadman

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