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Practice problem

Nonsense Mutation — Definition & Examples

By Gabi Slizewska
A list of codons and the amino acids they code for. UUU and UUC code for Phe. UUA, UUG, CUU, CUC, CUA, and CUG code for Leu. AUU, AUC, and AUA code for Ile. AUG codes for Met. GUU, GUC, GUA, and GUG code for Val. UCU, UCC, UCA, UCG, AGU, and AGC code for Ser. CCU, CCC, CCA, and CCG code for Pro. ACU, ACC, ACA, and ACG code for Thr. GCU, GCC, GCA, and GCG code for Ala. UAU and UAC code for Tyr. UAA, UAG, and UGA code for Stop. CAU and CAC code for His. CAA and CAG code for Gln. AAU and AAC code for Asn. AAA and AAG code for Lys. GAU and GAC code for Asp. GAA and GAG code for Glu. UGU and UGC code for Cys. UGG codes for Trp. CGU, CGC, CGA, and CGG code for Arg. AGU, AGC, AGA, and AGG code for Arg. GGU, GGC, GGA, and GGG codes for Gly.

In a particular sequence, a single base change created a nonsense mutation in the codon which would normally correspond to Gly. Which of the following was the original codon before the mutation occurred?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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