Consider the following double-stranded DNA sequence that codes for a short polypeptide. 5'-A-T-G-T-G-G-C-C-A-C-T-A-T-A-A-T-C-A-3'
3'-T-A-C-A-C-C-G-G-T-G-A-T-A-T-T-A-C-T-5'
Which strand is the coding strand,and where is the N-terminal end of the resulting peptide located?
A)The top strand is the coding strand,and the N-terminus is on the right.
B)The top strand is the coding strand,and the N-terminus is on the left.
C)The bottom strand is the coding strand,and the N-terminus is on the right.
D)The bottom strand is the coding strand,and the N-terminus is on the left.
E)Not enough information is given to answer the question.

Question

Quizplus · Accepted Answer

The top strand is the coding strand because it contains the start codon (ATG) at the beginning of the sequence, indicating where translation begins. The N-terminus of a protein corresponds to the start of translation, which is on the left side when the sequence is written in the 5' to 3' direction.

Consider the Following Double-Stranded DNA Sequence That Codes for a Short