A DNA strand has a region with the sequence ATCGGATC. Which of the following would be a complementary strand?
A) CGATACGT
B) TAGCCTAG
C) TUGCCTUG
D) UAGCCUAG

Question

Quizplus · Accepted Answer

The complementary base pairing rules in DNA dictate that A pairs with T and C pairs with G. In order to form a complementary strand to the given sequence ATCGGATC, each base should pair with its complementary base. The possible complementary strand would be TAGCCTAG, which follows the base pairing rules. Choice A (CGATACGT) does not contain the complementary bases, while choices C (TUGCCTUG) and D (UAGCCUAG) are not valid DNA sequences.

A DNA Strand Has a Region with the Sequence ATCGGATC