Using Figure 17.6, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.
A) 5-UUUCCCAAA-3
B) 5-GAACCCCTT-3
C) 5-CTTCGGGAA-3
D) 5-AAACCCUUU-3

Question

Using Figure 17.6, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.
A) 5-UUUCCCAAA-3 
B) 5-GAACCCCTT-3 
C) 5-CTTCGGGAA-3 
D) 5-AAACCCUUU-3

Quizplus · Accepted Answer

The codon for phenylalanine is UUU, the codon for proline is CCC, and the codon for lysine is AAA, so the 5′ → 3′ sequence of nucleotides in the DNA template strand would be 5-CTTCGGGAA-3.