A student analyzes a genomic DNA sequence of 100 nucleotides in order to determine if it is part of a gene. When she translates the sequence beginning at the first nucleotide, she finds that the tenth codon is UAA. What should she do next?A. Tell her professor that the sequence encodes a peptide with nine amino acids. B. Tell her professor that the sequence does not represent an exon.
C. Use the genomic DNA to make a cDNA of the sequence.
D. Translate the sequence in the other five reading frames.