Question

a strand of mrna has the bases guanine - adenine - cytosine. which amino acid corresponds to these bases? messenger rna codons second base in codon u c a g u uuu phe ucu uau ugu cys u uuc ucc uac ugc c uua leu uca ser uaa stop uga stop a uug ucg uag stop ugg trp g c cuu ccu cau cgu u cuc ccc cac his cgg c cua pro caa gln cga a cug ccg cag cgg g a auu acu aau agu ser u auc ile acc aac asn agc c aua thr aaa lys aga arg a aug start acg aag agg g g guu gcu gau asp ggu u guc gcc gac ggc c gua val gca ala gaa glu gga a gug gcg gag ggg g a. cys b. asp c. arg

Explanation:

Step1: Locate the codon

The mRNA codon is GAC. In the codon - table, find the row corresponding to the first base 'G', the column corresponding to the second base 'A', and then the sub - column for the third base 'C'.

Step2: Identify the amino acid

From the table, the amino acid corresponding to GAC is Aspartic acid (Asp).

Answer:

B. Asp