The beginning of a strand of mRNA has the following base sequence: AUGCUUCCCCAACGAUUUCGACUU. The polypeptide formed by the first six steps of protein synthesis has the composition Met-Leu-Pro-Gln-Arg-Phe. What is the next amino acid to be added to the polypeptide chain?
A)Arg
B)Gln
C)Leu
D)Met
E)Phe

Question

Quizplus · Accepted Answer

The next codon in the mRNA sequence after the first six amino acids (AUG CUU CCC CAA CGA UUU) is CGA, which codes for the amino acid Arginine (Arg).

The Beginning of a Strand of MRNA Has the Following