The codons UGU and UGC code for the amino acid cysteine, which can form disulfide bonds in a polypeptide.
The codon UGG codes for the amino acid tryptophan, which does not contain a sulfur atom.
The codon UGA is a stop signal.
The DNA triplet code for the 10th amino acid in a particular polypeptide is ACA.
Which single base substitutions in this triplet code will result in no disulfide bond being formed with the 10th amino acid in the polypeptide?
1 )
ACC and ACG
2 )
ACG and ACT
ACT and ACC
4 )
ACT only
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