Question

As some aminoacids have more than one codon so for production of an aminoacids all of its codons are necessary or any one of them can encode individually for that aminoacid?

Answer 1

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Explanation:

I think a better way to look at it is like this. Codons don't code for amino acids, but rather they code for specific tRNA with matching anticodon loops. As you say, for one amino acid, there may be several suitable codons.....but think of it this way. One amino acid will bind to (be put on by aminoacyl tRNA synthase enzyme) several different tRNA that correspond to several different condons by virtue of their different anticodon loops.