The complimentary nucleic acid sequence for the following DNA sequence-ATG GAC GTA TTC-is
A)ATG GAC GTA TTC
B)TAC CTG CAT AAG
C)CGT TCA TGC GGA
D)CTT ATG CAG GTA
E)none of these

Question

Quizplus · Accepted Answer

In DNA, adenine pairs with thymine and cytosine pairs with guanine. In RNA, uracil replaces thymine. The complementary mRNA sequence for the given DNA sequence would be AUG GAC GUA UUC. Since RNA uses uracil, adenine in the DNA pairs with uracil in RNA, guanine in the DNA pairs with cytosine in RNA, thymine in the DNA pairs with adenine in RNA, and cytosine in the DNA pairs with guanine in the RNA. The only option that matches this is choice B, which gives the RNA sequence as UAC CUG CAU AAG, and this sequence is complementary to the original DNA sequence.

The Complimentary Nucleic Acid Sequence for the Following DNA Sequence-ATG