If a gene encodes a polypeptide of 50 amino a | vedclass

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Question

(A) The codon $UAA$ is a stop codon (also known as a nonsense codon). When the $25^{th}$ codon mutates to $UAA$,the translation process will terminate

Vedclass · Accepted Answer

$A$ polypeptide of $24$ amino acids will be formed.

Vedclass · Answer

(A) The codon $UAA$ is a stop codon (also known as a nonsense codon). When the $25^{th}$ codon mutates to $UAA$,the translation process will terminate prematurely at the $24^{th}$ amino acid position. Since the ribosome stops adding amino acids after the $24^{th}$ one,a truncated polypeptide chain consisting of only $24$ amino acids will be synthesized. Therefore,the correct answer is that a polypeptide of $24$ amino acids will be formed.

If a gene encodes a polypeptide of $50$ amino acids and the $25^{th}$ codon mutates to $UAA$,what will be the result?

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