A .  Terminating the process of protein synthesis
B .  Formation of unspecified amino acids
C .  Conversion of sense DNA into nonsense one
D .  Releasing tRNA from polypeptide chain
Answer: Option A : A Nonsense codons are those that terminate the translation process since there are no corresponding tRNA molecules with anticodons for them. They are also called stop codons and there are three of them: UAA, UAG, UGA.
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