| The mRNA triplet UGA acts as a stop codon to terminate the synthesis of a polypeptide. The diagram shows a strand of DNA coding for 4 amino acids. Where would a mutation, involving the insertion of a thymine nucleotide, result in the termination of translation? |
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A) P
B) Q
C) R
D) S
Correct Answer: C
Solution :
If the T is inserted into the position R, the DNA strand will be read as TTC ACG ACT AAG T When transcripted, the mRNA coded for will be \[AAG\,\,UGC\,\,UGA\,\,UUC\to UGA\] is a stop codon and will result in termination of translation.
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