The one aspect which is not a salient feature of genetic code, is its being
(2) The genetic code is degenerate, ie, a given amino acid can be specified by more than one codons.
The genetic code inside the cell medium is said to be non-ambiguous because a particular codon always codes the same amino acid. But in certain rare cases the genetic code is found to be ambiguous, ie, some codons code for different amino acids under different conditions. The genetic code is almost universal.