Question

There is a tRNA with anticodon UAC. If we apply the wobble hypothesis, then this tRNA can decode which of these codons?

• A. It can decode AUG,AUC, AUU, AUA
• B. It can decode AUG and AUC but not AUU and AUA
• C. It can decode AUG but not AUC, AUU and AUA
• D. It cannot decode any one of these codons AUG, AUC, AUU and AUA

Answer 1

Answer: (C)

The tRNA having anticodon UAC would definitely decode AUG. It carries amino acid methionine. The other codons AUU, AUC, AUA code for amino acid isoleucine. The tRNA will not be able to decode these codons which code for isoleucine.