20. How many amino acids are coded for in this mRNA sequence:      GGUACCUUUACU
a. 12        b. 6         c. 4         d. 1

A codon is 3 bases in length and specifies one amino acid.   Since the sequence above is 12 bases in length, this sequence would have the information for lining up 4 amino acids.

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Emma Erdahl, Associate Professor of Biology
Northern Virginia Community College
Revised 8/23/00