Question

according to the rna codon chart, which of the following statements is true?
a. ucc is the only possible combination that codes for serine.
b. aug codes for both methionine and valine amino acids.
c. auu codes for the isoleucine amino acid.
d. aga and gud both code for the arginine amino acid

Explanation:

1. For option A: Multiple codons code for serine, such as UCU, UCC, UCA, UCG, AGU, AGC, so UCC is not the only one.
2. For option B: AUG only codes for methionine (the start codon), not valine.
3. For option C: AUU is one of the codons that codes for isoleucine, along with AUC and AUA.
4. For option D: AGA codes for arginine, but GUU codes for valine, not arginine.

Answer:

C. AUU codes for the isoleucine amino acid.