In one strand of DNA, the nucleotide sequence is 5ʹ-A-T-G-C-3ʹ. The complementary sequence in the other strand must be
A) 5ʹ-A-T-G-C-3ʹ.
B) 5ʹ-C-G-T-A-3ʹ.
C) 3ʹ-T-A-C-G-5ʹ.
D) 3ʹ-G-C-A-T-5ʹ.

Question

Quizplus · Accepted Answer

The complementary DNA strand is formed by pairing adenine (A) with thymine (T) and cytosine (C) with guanine (G), in the opposite direction. Thus, 5ʹ-A-T-G-C-3ʹ pairs with 3ʹ-T-A-C-G-5ʹ.

In One Strand of DNA, the Nucleotide Sequence Is 5ʹ-A-T-G-C-3ʹ