Translating mRNA codons to amino acids

Steps:

• Recognize the given sequence CGG CCC CCG as the mRNA transcribed strand.
• Divide into three codons: CGG, CCC, CCG.
• Use the table to assign amino acids: CGG codes for Arg, CCC for Pro, CCG for Arg.
• Form the polypeptide sequence: Arg-Pro-Arg.

Why B is correct:

• The mRNA codons CGG, CCC, and CCG directly match the table's codes for arginine, proline, and arginine, producing Arg-Pro-Arg.

Why the others are wrong:

• A and D: Suggest Ala-Gly-Ala, but alanine and glycine codons (not listed) do not appear; confuses with unrelated sequences.
• C: Suggests Arg-Gly-Arg, but the second codon CCC codes for Pro, not Gly (GGC).

Final answer: B