The noticeable effect of a nucleotide-pair substitution which results in a nonsense mutation in a gene is that it prematurely releases a signal for a living cell to stop protein synthesis.
It happens that a nonsense mutation lowers, reduces, inhibits or even stops the synthesis of proteins in cells when a chance in sequence leads to stop a codon instead of the codon to specify an amino acid. When this happens, it then sends an untimely signal to stop the production of proteins or specific amino acids
In conclusion, it can be deduced from all said and done above that nonsense mutation results to one of three stop codons.
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