Question

which amino acid chain will be formed by the codons shown below? gga aag ugu messenger rna codons first base in codon second base in codon third base in codon u c a g u uuu uuc phe ucu ucc uca ucg ser uau uac tyr ugu ugc cys u uua uug leu uaa stop uag stop uga stop ugg trp c cuu cuc cua cug leu ccu ccc cca ccg pro cau cac his cgu cgc cga cgg arg c a auu auc aua ile acu acc aca acg thr aau aac asn agu agc ser a aug met aaa aag lys aga agg arg g guu guc gua gug val gcu gcc gca gcg ala gau gac asp ggu ggc gga ggg gly g a. glu lys val b. gly lys cys c. gly lys val

Explanation:

Step1: Identify amino - acid for GGA

Using the codon - table, GGA codes for Glycine (Gly).

Step2: Identify amino - acid for AAG

Using the codon - table, AAG codes for Lysine (Lys).

Step3: Identify amino - acid for UGU

Using the codon - table, UGU codes for Cysteine (Cys).

Answer:

B. Gly Lys Cys