We define CODON is a 3 base sequence of nitrogenous bases in a row on mRNA and we know the mRNA is single stranded molecule of polynucleotides containing Adenine , Guanine , Cytosine and Uracil.So we define codon is a 3 base sequence of any of the above nucleotides.
Similarly we say ANTI codon is a 3 base sequence of nitrogenous bases but it is on tRNA at a specific loop called ANTI codon loop and tRNA has not only A T G U but it has also Pseudo bases which don’t account for Anti codon sequences.
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27 фев 2017