The two strands of a DNA double helix are said to be antiparallel. This means that ____.
A) the 5' end of one strand is directly paired with the 5' end of the other strand
B) since the double helix twists, it is not perfectly parallel
C) one strand has a negative charge, and the other strand has a positive charge
D) the 5' end of one strand is directly paired with the 3' end of the other strand
E) both strands have a negative charge

Question

Quizplus · Accepted Answer

The antiparallel nature of DNA refers to the orientation of the two strands, where one strand runs in a 5' to 3' direction, and the other runs in a 3' to 5' direction, meaning the 5' end of one strand is paired with the 3' end of the other.

The Two Strands of a DNA Double Helix Are Said